19-0785; Rev 2; 4/08
KIT
ATION
EVALU
E
BL
AVAILA
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
General Description
Features
♦
Complete Chargers for Single-Cell Li+ Battery
♦
Dual-Input, 30V AC Adapter/16V USB
♦
No External FET, Blocking Diode, or Sense
Resistor Required
♦
Automatic USB/AC Adapter Input Selection
♦
Easy Programmable Fast-Charge Current and
Top-Off Threshold
♦
Proprietary Die Temperature Regulation Control
♦
±5% Fast-Charge Current-Limit Accuracy
♦
Battery Pack Detection Input
(MAX8804V/MAX8804W)
♦
Power-Present and Charger-Status Outputs
♦
No Prequalification Charge (MAX8804Y)
♦
Tiny 2mm x 3mm Thermally Enhanced TDFN
Package
♦
USB Charging Protected by US Patent #6,507,172
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
intelligent, dual-input, stand-alone, constant-current,
constant-voltage (CCCV), thermally regulated linear
chargers are designed for a single-cell lithium-ion (Li+)
battery. They integrate the current-sense circuit, MOS
pass element, thermal-regulation circuitry, and overvolt-
age protection (OVP), and eliminate the reverse-block-
ing Schottky diode.
The MAX8804V/MAX8804W/MAX8804Z function as
stand-alone chargers to control the charging sequence
from the prequalification state through fast-charge, top-
off charge, and full-charge indication. The MAX8804Y
eliminates the prequalification state to allow startup into a
load without a battery. Proprietary thermal-regulation cir-
cuitry limits the die temperature when fast-charging or
while exposed to high ambient temperatures, allowing
maximum charging current without damaging the IC.
The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
achieve high flexibility by providing an adjustable DC/USB
fast-charge current through a simple single-wire interface
(SET input). The chargers automatically select between
either a USB or AC adapter input source. The AC adapter
charge current is programmable from 400mA to 700mA in
50mA steps through a serial interface. The USB charge
current is programmable to 95mA, 380mA, or 475mA
through the same interface. Other features include an
active-low battery charging-status indicator (CHG), an
active-low power-OK indicator (POK), an active-low USB
input detection output (USBPWR) on the MAX8804Y/
MAX8804Z, and battery pack detection (DETBAT) on the
MAX8804V/MAX8804W.
The MAX8804V has 120mA, 140mA, 180mA, and
200mA
CHG
top-off threshold settings, while the
MAX8804W/MAX8804Y/MAX8804Z have 70mA, 80mA,
90mA, and 100mA.
The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
accept a 4.15V to 30V DC source voltage or a 4.15V to
16V USB input voltage, but disable charging when
either input voltage exceeds 7.5V to protect against
unqualified or faulty input sources. The MAX8804V/
MAX8804W/MAX8804Y/MAX8804Z operate over the
extended temperature range (-40°C to +85°C) and are
available in a tiny 8-pin thermally enhanced 2mm x
3mm TDFN package.
Ordering Information
PART
MAX8804VETA+
MAX8804WETA+
MAX8804YETA+
MAX8804ZETA+
PIN-
PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
8 TDFN-EP*
TOP
MARK
AAQ
AAP
AAD
AAC
*EP
= Exposed paddle.
+Denotes
a lead-free package.
Note:
All devices are specified to operate over the -40°C to
+85°C operating temperature range.
Typical Application Circuit
+3.3V
AC
ADAPTER
1μF
DC
GND
USB
PORT
MAX8804V
MAX8804W
MAX8804Y
MAX8804Z
CHG
POK
USB
1μF
<USBPWR>
(DETBAT)
BAT
2.2μF
Li+
Applications
Cell Phones/Smartphones
Digital Cameras
Portable Media Players
Pin Configuration appears at end of data sheet.
MP3 Players
Other Handheld Devices
ENABLE/DISABLE
AND PROGRAMMING
SET
NOTE: () FOR MAX8804V/MAX8804W, < > FOR MAX8804Y/MAX8804Z
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
ABSOLUTE MAXIMUM RATINGS
DC to GND .............................................................-0.3V to +30V
USB to GND ...........................................................-0.3V to +16V
BAT,
CHG,
SET,
POK, USBPWR,
DETBAT
to GND...............................................................-0.3V to +5.5V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin TDFN 2mm x 3mm (derate 16.7mW/°C above +70°C)
(multilayer board) .......................................................1333mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
((V
DC
= 5V, V
SET
= 0V) or (V
USB
= 5V, V
SET
= 5V), V
BAT
= unconnected, V
DETBAT
= 0V (MAX8804V/MAX8804W), T
A
= -40°C to
+85°C, unless otherwise noted.) (Note 1)
PARAMETER
DC AND USB
DC Input Voltage Range
USB Input Voltage Range
Input Operating Range
Input Undervoltage Threshold
Input Overvoltage Threshold
DC Input Supply Current
(Notes 2, 3)
V
IN
rising, 500mV hysteresis (typ) (Note 2)
V
IN
rising, 200mV hysteresis (typ) (Note 2)
V
USB
= 0V, I
BAT
= 0mA, charge mode
V
SET
= 5V, standby mode
V
DC
= V
BAT
= 4.3V, shutdown mode
V
DC
= 0V, V
SET
= 5V, I
BAT
= 0mA, charge mode
USB Input Supply Current
DC to BAT On-Resistance
USB to BAT On-Resistance
Input to BAT Comparator
Threshold (Note 2)
BAT
BAT Regulation Voltage
Battery Removal Detection
Threshold
I
BAT
= 0mA
V
BAT
rising
Hysteresis
Default and 1st to 3rd
interface pulse
V
USB
= 0V,
V
BAT
= 3.6V,
rising edge detection on
SET (MAX8804Y/
MAX8804Z)
4th to 7th interface pulse
8th to 11th interface pulse
12th to 15th interface pulse
16th to 19th interface pulse
20th to 23rd interface pulse
24th to 27th interface pulse
475
523
570
428
380
618
665
T
A
= +25°C
T
A
= -40°C to +85°C
4.179
4.158
4.40
4.200
4.200
4.67
0.1
500
550
600
450
400
650
700
525
578
630
473
420
683
735
mA
4.221
4.242
4.90
V
V
V
SET
= 0V, standby mode
V
USB
= V
BAT
= 4.3V, shutdown mode
V
DC
= 3.7V, V
BAT
= 3.6V
V
USB
= 3.7V, V
BAT
= 3.6V
V
IN
rising
V
IN
falling
145
0
0
4.15
3.85
7.2
4.0
7.5
800
300
300
800
300
300
0.55
0.65
260
55
28
14
7.00
4.15
7.8
1200
550
550
1200
550
550
1.0
1.2
385
Ω
Ω
mV
µA
µA
V
V
V
V
V
CONDITIONS
MIN
TYP
MAX
UNITS
DC Charging Current
2
_______________________________________________________________________________________
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
ELECTRICAL CHARACTERISTICS (continued)
((V
DC
= 5V, V
SET
= 0V) or (V
USB
= 5V, V
SET
= 5V), V
BAT
= unconnected, V
DETBAT
= 0V (MAX8804V/MAX8804W), T
A
= -40°C to
+85°C, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
Default and 1st to 3rd interface
pulse
V
USB
= 0V,
V
BAT
= 3.6V,
rising edge detection
on SET (MAX8804V/
MAX8804W)
4th to 7th interface pulse
8th to 11th interface pulse
12th to 15th interface pulse
16th to 19th interface pulse
20th to 23th interface pulse
24th to 27th interface pulse
V
DC
= 0V,
V
BAT
= 3.6V, rising
edge detection on SET
(MAX8804Y/
MAX8804Z)
V
DC
= 0V,
V
BAT
= 3.6V, rising
edge detection on SET
(MAX8804V/
MAX8804W)
Default
1st interface pulse
2nd interface pulse
Default
1st interface pulse
2nd interface pulse
MIN
428
523
475
380
570
618
665
90
360
450
360
450
90
TYP
450
550
500
400
600
650
700
95
380
475
380
475
95
250
2.35
2.50
95
2
1.6
0.4
1
1
1.5
1.5
2
2
2
I
POK
= I
CHG
= I
USBPWR
= 5mA
V
POK
= V
CHG
=
V
USBPWR
= 5.5V,
V
DC
= V
USB
= 0V
Rising
Falling
0.4
63
T
A
= +25°C
T
A
= +85°C
60
0.001
0.01
1000
1000
2.5
2.5
4
500
1
µA
2.65
MAX
473
578
525
420
630
683
735
100
400
500
mA
400
500
100
µs
V
mA
µA
mA
UNITS
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
DC Charging Current
USB Charging Current
Soft-Start Time
BAT Prequal Threshold
BAT Prequal Charge Current
BAT Leakage Current
SET
Logic Input Thresholds
Logic-High Time
Logic-Low Time
SET DC Mode Shutdown Delay
SET USB Mode Shutdown Delay
SET Internal Pulldown Resistor
Ramping time from 0 to 500mA
MAX8804V/MAX8804W/MAX8804Z only, V
BAT
rising,
300mV hysteresis (typ)
MAX8804V/MAX8804W/MAX8804Z only
V
DC
= V
USB
= 0V, V
BAT
= 4.2V
V
SET
rising
V
SET
falling
Pulse width required to program DC charge current
Pulse width required to program USB charge current
V
USB
= 0V, V
DC
= 5V, measured from V
SET
low to high
V
DC
= 0V, V
USB
= 5V, measured from V
SET
high to low
V
µs
µs
ms
ms
MΩ
mV
POK, CHG, USBPWR (USBPWR
only for MAX8804Y/MAX8804Z)
Logic Output-Voltage Low
Logic Output-Current High
DETBAT (MAX8804V/MAX8804W only)
Logic Input Theshold
Pullup Resistor
1.6
V
kΩ
_______________________________________________________________________________________
3
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
ELECTRICAL CHARACTERISTICS (continued)
((V
DC
= 5V, V
SET
= 0V) or (V
USB
= 5V, V
SET
= 5V), V
BAT
= unconnected, V
DETBAT
= 0V (MAX8804V/MAX8804W), T
A
= -40°C to
+85°C, unless otherwise noted.) (Note 1)
PARAMETER
CHG
V
DC
= 0V, V
USB
= 5V
Default, 4th, 8th,
12th, 16th, 20th,
24th, 28th interface
pulse
CHG
Top-Off Threshold
(MAX8804W/MAX8804Y/
MAX8804Z)
I
BAT
falling, battery is
charged, rising edge
on SET
1st, 5th, 9th, 13th,
17th, 21st, 25th
interface pulse
2nd, 6th, 10th,
14th, 18th, 22nd,
26th interface pulse
3rd, 7th, 11th, 15th,
19th, 23rd, 27th
interface pulse
V
DC
= 0V, V
USB
= 5V
Default, 4th, 8th,
12th, 16th, 20th,
24th, 28th interface
pulse
CHG
Top-Off Threshold
(MAX8804V)
I
BAT
falling, battery is
charged, rising edge
on SET
1st, 5th, 9th, 13th,
17th, 21st, 25th
interface pulse
2nd, 6th, 10th,
14th, 18th, 22nd,
26th interface pulse
3rd, 7th, 11th, 15th,
19th, 23rd, 27th
interface pulse
CHG
Hysteresis
CHG
Detection Delay
THERMAL LOOP
Thermal-Regulation Set Point
Thermal-Regulation Gain
Junction temperature when the charge current is reduced,
T
J
rising
Reduction of I
BAT
for
increase of T
J
DC charging
USB charging
+105
-40
-24
°C
mA/°C
I
BAT
rising after top-off
is detected (Note 4)
DC mode
USB mode
3
60
80
100
CONDITIONS
MIN
TYP
MAX
UNITS
60
80
100
67.5
90
112.5
V
DC
= 5V,
V
USB
= 0V
mA
75
100
125
52.7
60
70
80
87.5
100
90
120
150
105
140
175
V
DC
= 5V,
V
USB
= 0V
mA
135
180
225
150
200
57
51
4
250
mA
5
ms
I
BAT
falls below top-off threshold
Note 1:
Devices are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design
and characterization.
Note 2:
V
IN
refers to the input for the IC. For the MAX8804V/MAX8804W/MAX8804Y/MAX8804Z, V
IN
is V
DC
with V
USB
= 0V or V
USB
with V
DC
= 0V.
Note 3:
Guaranteed by undervoltage and overvoltage threshold testing. For charge completion, the input voltage must be greater
than 4.28V.
Note 4:
This hysteresis is for all charge current except 95mA. In the case of 95mA charge current, voltage-mode to current-mode
detection gives indication of charge mode.
4 _______________________________________________________________________________________
High-Voltage, Dual-Input, USB/AC
Adapter Chargers in 2mm x 3mm TDFN
Typical Operating Characteristics
(V
BAT
= 3.6V; DC charge mode: V
DC
= 5V, V
USB
= 0V, V
DETBAT
= 0V (MAX8804Y/MAX8804Z only), V
SET
= 0V or unconnected; USB
charge mode: V
USB
= 5V, V
DC
= 0V, V
SET
= 5V; T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. INPUT VOLTAGE
(DC CHARGING MODE)
MAX8804Y/Z toc01
MAX8804V/MAX8804W/MAX8804Y/MAX8804Z
SUPPLY CURRENT vs. INPUT VOLTAGE
(USB CHARGING MODE)
MAX8804Y/Z toc02
1.0
1.0
0.8
SUPPLY CURRENT (mA)
0.8
SUPPLY CURRENT (mA)
0.6
0.6
0.4
0.4
0.2
0.2
0
0
3
6
9 12 15 18 21 24 27 30
INPUT VOLTAGE (V)
0
0
2
4
6
8
10 12
INPUT VOLTAGE (V)
14
16
DISABLED-MODE SUPPLY CURRENT
vs. INPUT VOLTAGE (DC CHARGING MODE)
MAX8804Y/Z toc03
STANDBY-MODE SUPPLY CURRENT
vs. INPUT VOLTAGE (USB CHARGING MODE)
MAX8804Y/Z toc04
0.8
0.8
SUPPLY CURRENT (mA)
SUPPLY CURRENT (mA)
0.6
0.6
0.4
0.4
0.2
0.2
0
0
5
10
15
20
INPUT VOLTAGE (V)
25
30
0
0
2
4
6
8
10 12
INPUT VOLTAGE (V)
14
16
CHARGE CURRENT vs. BATTERY VOLTAGE
(DC CHARGING MODE)
MAX8804Y/Z toc05
CHARGE CURRENT vs. BATTERY VOLTAGE
(USB CHARGING MODE)
MAX8804Y/Z toc06
600
500
CHARGE CURRENT (mA)
400
300
200
100
0
0
200
160
CHARGE CURRENT (mA)
120
80
40
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
BATTERY VOLTAGE (V)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
BATTERY VOLTAGE (V)
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
