19-0275; Rev 3; 9/08
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
General Description
The
MAX882/MAX883/MAX884 linear regulators maxi-
mize battery life by combining ultra-low supply currents
and low dropout voltages. They feature 200mA output
current capability at up to +125°C junction temperature
and come in a 1.5W SOIC package. The 1.5W package
(compared to 0.47W for standard SOIC packages)
allows a wider operating range for the input voltage and
output current. The MAX882/MAX883/MAX884 use a P-
channel MOSFET pass transistor to maintain a low 11µA
(15µA max) supply current from no-load to the full
200mA output. Unlike earlier bipolar regulators, there are
no PNP base current losses that increase with output
current. In dropout, the MOSFET does not suffer from
excessive base currents that occur when PNP transistors
go into saturation. Typical dropout voltages are 220mV
at 5V and 200mA, or 320mV at 3.3V and 200mA.
The MAX882 features a 7µA standby mode that disables
the output but keeps the reference, low-battery compara-
tor, and biasing circuitry alive. The MAX883/MAX884 fea-
ture a shutdown (OFF) mode that turns off all circuitry,
reducing supply current to less than 1µA. All three
devices include a low-battery-detection comparator, fold-
back current limiting, reverse-current protection, and
thermal-overload protection.
The output is preset at 3.3V for the MAX882/MAX884
and 5V for the MAX883. In addition, all devices employ
Dual Mode™ operation, allowing user-adjustable outputs
from 1.25V to 11V using external resistors. The input volt-
age supply range is 2.7V to 11.5V.
For low-dropout linear regulators with output currents up
to 500mA, refer to the MAX603/MAX604 data sheet.
♦
Foldback Current Limiting
♦
High-Power (1.5W) 8-Pin SO Package
♦
Dual Mode Operation: Fixed or Adjustable
Output from 1.25V to 11V
♦
Large Input Range (2.7V to 11.5V)
♦
Internal 1.1Ω P-Channel Pass Transistor
Draws No Base Current
♦
Low 220mV Dropout Voltage at 200mA
Output Current
♦
11µA (typ) Quiescent Current
♦
1µA (max) Shutdown Mode or 7µA (typ)
Standby Mode
♦
Low-Battery Detection Comparator
♦
Reverse-Current Protection
♦
Thermal-Overload Protection
Features
MAX882/MAX883/MAX884
Ordering Information
PART
MAX882CPA
MAX882CSA
MAX882C/D
MAX882EPA
MAX882ESA
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 PDIP
8 SO
Dice*
8 PDIP
8 SO
Applications
Pagers and Cellular Phones
3.3V and 5V Regulators
1.25V to 11V Adjustable Regulators
High-Efficiency Linear Regulators
Battery-Powered Devices
Portable Instruments
Solar-Powered Instruments
Ordering Information continued at end of data sheet.
*Dice
are tested at T
J
= +25°C, DC parameters only.
**Contact
factory for availability.
Typical Operating Circuit
ON/OFF
OFF (STBY)
OUTPUT
VOLTAGE
Pin Configuration
TOP VIEW
LBO
SET
GND
OUT
( ) ARE FOR MAX882.
1
2
3
4
8
LBI
INPUT
VOLTAGE
C
IN
O.1μF
BATTERY
IN
LBI
MAX882
MAX883
MAX884
GND
OUT
MAX882
MAX883
MAX884
DIP/SO
7
OFF (STBY)
6
GND
5
IN
SET
C
OUT
2.2μF
( ) ARE FOR MAX882.
Dual Mode is a trademark of Maxim Integrated Products.
________________________________________________________________
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.
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
MAX882/MAX883/MAX884
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (IN or OUT to GND).......................-0.3V to +12V
Output Short-Circuit Duration ...............................................1min
Continuous Output Current ...............................................300mA
LBO
Output Current ............................................................50mA
LBO
Output Voltage and LBI,
SET, STBY, OFF Input Voltages ............-0.3V to the greater of
(IN + 0.3V) or (OUT + 0.3V)
Continuous Power Dissipation (T
J
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
High-Power SO (derate 18.75mW/°C above +70°C) .......1.5W
CERDIP (derate 8.00mW/°C above +70°C) .................640mW
Operating Temperature Ranges
MAX88_C_A ........................................................0°C to +70°C
MAX88_E_A .....................................................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +160°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
IN
= 6V (MAX883) or V
IN
= 4.3V (MAX882/MAX884), C
OUT
= 2.2µF, STBY or OFF = V
IN
, SET = GND, LBI = V
IN
, T
J
= -40°C to
+85°C, unless otherwise noted. Typical values are at T
J
= +25°C.) (Note 1)
PARAMETER
Input Voltage Range
SYMBOL
V
IN
CONDITIONS
MAX88_C_A
SET = OUT, R
L
=
1kΩ
MAX88_E_A
MAX88_MJA
MAX883,
6.0V
≤
V
IN
≤
11.5V
Output Voltage (Note 2)
V
OUT
MAX882/MAX884,
4.3V
≤
V
IN
≤
11.5V
I
OUT
= 1mA to
200mA
I
OUT
= 1mA to
150mA
I
OUT
= 100µA - 250mA,
0°C
≤
T
J
≤
+85°C
I
OUT
= 100µA - 250mA,
-40°C
≤
T
J
≤
+85°C
I
OUT
= 100µA - 200mA,
0°C
≤
T
J
≤
+85°C
I
OUT
= 100µA - 200mA,
-40°C
≤
T
J
≤
+85°C
MAX883C_A/E_A
MAX883MJA
MAX882, MAX884
30
10
110
220
160
320
11
15
MIN
2.7
2.9
3.0
4.75
4.65
3.15
3.07
60
3.30
5.00
TYP
MAX
11.5
11.5
11.5
5.25
5.35
V
3.45
3.53
100
150
100
40
220
440
320
640
15
30
25
40
µA
mV
mV
mV
V
UNITS
Load Regulation
ΔV
LDR
Line Regulation
ΔV
LNR
(V
OUT
+ 0.5V) < V
IN
< 11.5V, I
OUT
= 10mA
MAX883
I
OUT
= 100mA
I
OUT
= 200mA
I
OUT
= 100mA
I
OUT
= 200mA
MAX88_C_A/E_A
MAX88_MJA
MAX88_C_A/E_A
MAX88_MJA
Dropout Voltage (Note 3)
ΔV
DO
MAX882/MAX884
SET = OUT, V
IN
=
6V
Quiescent Current
I
Q
V
IN
= 11.5V
2
_______________________________________________________________________________________
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 6V (MAX883) or V
IN
= 4.3V (MAX882/MAX884), C
OUT
= 2.2µF, STBY or OFF = V
IN
, SET = GND, LBI = V
IN
, T
J
= -40°C to
+85°C, unless otherwise noted. Typical values are at T
J
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
STBY = 0, V
IN
=
6V, SET = OUT
STBY Quiescent Current (Note 4)
I
Q STBY
STBY = 0, V
IN
=
11.5V, SET = OUT
MAX882C_A/E_A
MAX882MJA
MAX882C_A/E_A
MAX882MJA
0.01
10
MIN
TYP
7
MAX
15
30
25
40
1
5
10
1
3
10
170
430
+160
10
V
OUT
= 4.5V
ΔV
RTH
V
OUT
= 3.0V
MAX883_A
MAX882_A,
MAX884_A
6
6
7
0.01
µA
% of
V
OUT
200
65
150
1.16
1.12
±0.01
0°C
≤
T
J
≤
+85°C
-40°C
≤
T
J
≤
+85°C
1.15
1.11
7
V
LBI
= 1.5V
I
LBO
sink = 1.2mA, V
LBI
= 1V, 3V < V
IN
<
11.5V, SET = OUT
V
LBI
= V
IN
, V
LBO
= V
IN
MAX88_C_A
OUT Leakage Current
I
OUT LKG
V
IN
= 11.5V, V
OUT
= 2V, SET = OUT
MAX88_E_A
MAX88_MJA
±0.01
90
0.01
0.01
±50
250
0.1
1
3
10
µA
1.20
65
1.20
1.24
1.28
±50
1.25
1.29
0°C
≤
T
J
≤
+85°C
-40°C
≤
T
J
≤
+85°C
30
µs
mV
V
nA
V
mV
nA
mV
µA
20
20
mV
mA
°C
°C
µA
µA
µA
UNITS
MAX882/MAX883/MAX884
OFF Quiescent Current
I
Q OFF
OFF = 0, R
L
= 1kΩ, MAX88_C_A
V
IN
= 11.5V
MAX88_E_A
MAX883/MAX884
MAX88_MJA
MAX88_C_A
V
IN
= 11.5V, SET =
OUT
V
OUT
< 0.8V
V
OUT
> 0.8V and V
IN
- V
OUT
> 0.7V
MAX88_E_A
MAX88_MJA
Minimum Load Current
I
OUT(MIN)
Foldback Current Limit (Note 5)
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Reverse-Current-Protection
(Note 6)
ILIM
T
SD
ΔT
SD
MAX882: V
IN
= 0, STBY = 0, V
OUT
= 3.0V
Reverse Leakage Current
I
RVL
MAX883/MAX884: V
IN
= 0, OFF = 0, V
OUT
= 3.0V
R
L
= 1kΩ, C
OUT
= 2.2µF
V
IN
= 9V, R
L
= 33Ω, OFF from 0 to V
IN
, 0%
to 95% of V
OUT
For internal feedback
For external feedback
SET = OUT, R
L
=
1kΩ
V
SET
= 1.5V or 0
LBI signal falling
Startup Overshoot
Time Required to Exit OFF or
STBY Modes
Dual Mode SET Threshold
SET Reference Voltage
SET Input Leakage Current
LBI Threshold Voltage
LBI Hysteresis
LBI Input Leakage Current
LBO
Output Low Voltage
LBO
Output Leakage Current
V
OSH
T
START
V
SET TH
V
SET
I
SET
V
LBI
ΔV
LBI
I
LBI
V
LBOL
I
BLO
LKG
_______________________________________________________________________________________
3
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
MAX882/MAX883/MAX884
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 6V (MAX883) or V
IN
= 4.3V (MAX882/MAX884), C
OUT
= 2.2µF, STBY or OFF = V
IN
, SET = GND, LBI = V
IN
, T
J
= -40°C to
+85°C, unless otherwise noted. Typical values are at T
J
= +25°C.) (Note 1)
PARAMETER
STBY Threshold Voltage
STBY Hysteresis
STBY Input Leakage Current
SYMBOL
V
STBY
ΔV
STBY
I
STBY
V
IL OFF
OFF Threshold Voltage
MAX882_A
V
STBY
= V
IN
or 0, MAX882_A
In off mode, MAX883_A, MAX884_A
In on mode, SET = OUT, V
IN
< 6V,
MAX883_A, MAX884_A
V
IH OFF
In on mode, SET = OUT, 6V < V
IN
< 11.5V,
MAX883_A, MAX884_A
V
OFF
= V
IN
or 0
10Hz to 10kHz, SET = OUT, R
L
= 1kΩ,
C
OUT
= 2.2µF (Note 7)
2.0
3.0
±0.01
250
±50
nA
µV
RMS
CONDITIONS
STBY signal falling, MAX882_A
MIN
1.15
TYP
1.20
7
±0.01
±50
0.4
V
MAX
1.25
UNITS
V
mV
nA
OFF Input Leakage Current
Output Noise
I
OFF
e
n
Note 1:
Electrical specifications are measured by pulse testing and are guaranteed for a junction temperature (T
J
) within the operat-
ing temperature range, unless otherwise noted. Specifications to -40°C are guaranteed by design and not production tested.
Note 2:
(V
IN
- V
OUT
) is limited to keep the product (I
OUT
x (V
IN
- V
OUT
)) from exceeding the package power dissipation limits. See
Figure 5. Therefore, the combination of high output current and high supply voltage is not tested.
Note 3:
Dropout Voltage is (V
IN
- V
OUT
) when V
OUT
falls to 100mV below its nominal value at V
IN
= (V
OUT
+ 2V). For example, the
MAX883 is tested by measuring the V
OUT
at V
IN
= 7V, then V
IN
is lowered until V
OUT
falls 100mV below the measured value.
The difference (V
IN
- V
OUT
) is then measured and defined as
ΔV
DO
.
Note 4:
Since standby mode inhibits the output but keeps all biasing circuitry alive, the Standby Quiescent Current is similar to the
normal operating quiescent current.
Note 5:
Foldback Current Limit was characterized by pulse testing to remain below the maximum junction temperature (not
production tested).
Note 6:
The Reverse-Current Protection Threshold is the output/input differential voltage (V
OUT
- V
IN
) at which reverse-current
protection switchover occurs and the pass transistor is turned off. See the section
Reverse-Current Protection
in the
Detailed
Description.
Note 7:
Noise is tested using a bandpass amplifier with two poles at 10Hz and two poles at 10kHz.
4
_______________________________________________________________________________________
5V/3.3V or Adjustable, Low-Dropout,
Low I
Q
, 200mA Linear Regulators
MAX882/MAX883/MAX884
Typical Operating Characteristics
(V
IN
= 7V for MAX883, V
IN
= 5.3V for MAX882/MAX884, OFF or STBY = V
IN
, SET = GND, LBI = V
IN
,
LBO
= OPEN, C
IN
= C
OUT
= 2.2µF,
R
L
= 1kΩ, T
A
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE AND QUIESCENT
CURRENT vs. LOAD CURRENT
MAX882/4-01
OUTPUT VOLTAGE
vs. TEMPERATURE
NORMALIZED OUTPUT VOLTAGE (%)
103
102
101
100
99
98
97
96
-55 -35 -15
5
25
45 65
85 105 125
TEMPERATURE (°C)
MAX882/4-04a
101
NORMALIZED OUTPUT VOLTAGE (%)
100
99
98
97
96
OUTPUT VOLTAGE
NORMALIZED TO OUTPUT
VOLTAGE AT 1mA
0.1
1
10
I
Q
V
OUT
= 5V (MAX883)
V
OUT
= 3.3V (MAX882/MAX884)
30
25
20
15
10
5
0
100
250
LOAD CURRENT (mA)
104
95
0.01
QUIESCENT CURRENT (mA)
OUTPUT VOLTAGE AND QUIESCENT
CURRENT vs. SUPPLY VOLTAGE
MAX882/4-03
QUIESCENT CURRENT
vs. TEMPERATURE
MAX882/4-04
6
5
OUTPUT VOLTAGE (V)
4
V
OUT
= 3.3V (MAX882/MAX884)
3
2
I
Q
(MAX882/MAX884)
1
I
Q
(MAX883)
0
2
3
4
5
6
7
8
9
10 11 12
SUPPLY VOLTAGE (V)
16
14
12
10
8
6
4
15
QUIESCENT CURRENT (μA)
QUIESCENT CURRENT (μA)
V
OUT
= 5V (MAX883)
12
9
6
3
0
-55 -35 -15
5
25
45 65
85 105 125
TEMPERATURE (°C)
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX882/4-05
10Hz to 10kHz OUTPUT NOISE
MAX882/4-06
0.6
0.5
DROPOUT VOLTAGE (V)
0.4
0.3
0.2
V
OUT
= 5V (MAX883)
0.1
0
0
50
100
150
200
250
V
OUT
= 3.3V (MAX882/MAX884)
OUTPUT NOISE (1mV/div)
MAX883
V
OUT
= 5V
300
10ms/div
LOAD CURRENT (mA)
_______________________________________________________________________________________
5
国产芯片交流
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
