NCP1800
Single−Cell Lithium Ion
Battery Charge Controller
The NCP1800 is a constant current, constant voltage (CCCV)
lithium ion battery charge controller. The external sense resistor sets
the full charging current, and the termination current is 10% of the
Full−Charge current (0.1 C). The voltage is regulated at
±1%
during
the final charge stage. There is virtually zero drain on the battery when
the input power is removed.
Features
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8
1
Pb−Free Package is Available
Integrated Voltage and Programmable Current Regulation
Integrated Cell Conditioning for Deeply Discharged Cell
Integrated End of Charge Detection
Better than 1% Voltage Regulation
Charger Status Output for LED or Host Processor Interface
Charge Interrupt Input
Safety Shutoff for Removal of Battery
Adjustable Charge Current Limit
Input Over and Undervoltage Lockout
Micro8t Package
Micro8t
CASE 846A
DM SUFFIX
PIN CONNECTIONS AND
MARKING DIAGRAM
ISNS
ISEL
COMP/DIS
GND
1
180X
AYW
2
3
4
8
7
6
5
OUT
V
CC
CFLG
VSNS
Applications
•
Cellular Phones, PDAs
•
Handheld Equipment
•
Battery Operated Portable Devices
PMOS/Schottky (FETKYt): NTHD4P02FT1 (ChipFETt)
PMOS: NTGS3441T1 (TSOP 6)
Schottky: MBRM130L
R
SNS
V
in
X = A for 41 Device
B for 42 Device
A = Assembly Location
Y = Year
W = Work Week
ORDERING INFORMATION
Device
NCP1800DM41R2
NCP1800DM42R2
NCP1800DM41R2G
OUT
V
CC
ISNS
NCP1800
VSNS
Host or LED
Host
Processor
CFLG
COMP/
DIS
R
COMP
C
in
GND
Package
Micro8
Micro8
Micro8
(Pb−Free)
Shipping
†
4000 Units/Reel
4000 Units/Reel
4000 Units/Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
ISEL
R
ISEL
60 k
C
out
C
COMP
R
COMP
= 15
W,
C
COMP
= 560 nF
Figure 1. Typical Application
©
Semiconductor Components Industries, LLC, 2004
1
November, 2004 − Rev. 5
Publication Order Number:
NCP1800/D
NCP1800
R
SNS
C
in
V
CC
Active Pullup
OUT
I
SNS
CC
V
SNS
Chip
Enable
ISEL
I
REF
V
REF
V
REF
Input UV
Lockout
CONTROL
CV
V
REF
EOC
Detect
EOC REF
R
ISEL
LOGIC
V
REF
Pre CHG
Complete
V
REF
V
REF
CFLG
Input OV
Lockout
V
SNS
Overvoltage
V
REF
C
out
GND
COMP/DIS
Figure 2. NCP1800 Internal Block Diagram
PIN FUNCTION DESCRIPTIONS
Pin
1
2
3
4
5
6
7
8
Symbol
I
SNS
ISEL
COMP/DIS
GND
V
SNS
CFLG
V
CC
OUT
Description
This is one of the inputs to the current regulator and the end−of−charge comparator.
A resistor from this pin to ground pin sets the full charging current regulation level.
This is a multifunctional pin that is used for compensation and can be used to interrupt charge with an open
drain/collector output from a microcontroller. When this pin is pulled to ground, the charge current is interrupted.
This is the ground pin of the IC.
This is an input that is used to sense battery voltage and is the other input to the current regulator. It also serves
as the input to the battery overvoltage comparator.
An open drain output that indicates the battery charging status.
This is a multifunctional pin that powers the device and senses for over and undervoltage conditions.
This is a current source driver for the pass transistor.
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2
NCP1800
MAXIMUM RATINGS
Rating
Supply Voltage
Voltage Range for:
VSNS Input
ISNS Input
COMP/DIS Input
ISEL Input
CFLG Output
Out Output
OUT Sink Current
Thermal Resistance, Junction−to−Air
Operating Ambient Temperature
Operating Junction Temperature
Storage Temperature
Symbol
V
CC
−
−0.3 to 6.0
−0.3 to 6.0
−0.3 to 6.0
−0.3 to 6.0
−0.3 to 6.0
−0.3 to V
CC
Io
R
qJA
T
A
T
J
T
stg
20
240
−20 to +85
−20 to +150
−55 to +150
mA
°C/W
°C
°C
°C
Value
16
Unit
V
V
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
ATTRIBUTES
Characteristic
ESD Protection
Human Body Model (HBM) per JEDEC standard JESD22−A114
Machine Model (MM) per JEDEC standard JESD22−A114
Moisture Sensitivity, Indefinite Time Out of Drypack (Note 1)
Transistor Count
Latchup Current Maximum Rating per JEDEC standard JESD78
1. For additional information, see Application Note AND8003/D.
Value
≤
2 kV
≤
200 V
Level 1
1015
≤
150 mA
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C for typical values, −20°C < T
A
< 85
°C
for min/max values, unless otherwise noted.)
Characteristic
Input Supply Voltage (Note 2)
Input Supply Current
Regulated Ou u Voltage
egu a ed Output o age
NCP1800DM41
C 800
NCP1800DM42
Symbol
V
CC
I
CC
V
REG
V
FCHG
TCV
FCHG
V
PCHG
TCV
PCHG
V
PCTH
V
UVLO
−
−
V
EOC
TCV
EOC
Min
2.5
−
4.059
059
4.158
210
−
13.2
−
2.78
2.85
3.43
90
−
20
−
Typ
−
140
4.1
4.2
240
−0.163
24
−0.180
2.93
3.0
3.56
150
0.261
24
−0.160
Max
16
250
4.141
4.242
270
−
34.8
−
3.08
3.15
3.69
195
−
28
−
Unit
V
mA
V
mV
%/°C
mV
%/°C
V
V
mV
%/°C
mV
%/°C
Full−Charge Current Reference Voltage
V
CC
= 6.0 V, 3.0 V
t
V
SNS
t
4.2 V, R
ISEL
= 60 KW, T
A
= 25°C
Full−Charge Current Reference Voltage Temperature Coefficient
V
CC
= 6.0 V, 3.0 V
t
V
SNS
t
4.2 V, R
ISEL
= 60 KW
Pre−Charge Current Reference Voltage
V
CC
= 6.0 V, V
SNS
t
3.0 V, R
ISEL
= 60 KW, T
A
= 25°C
Pre− Charge Current Reference Voltage Temperature Coefficient
V
CC
= 6.0 V, V
SNS
t
3.0 V, R
ISEL
= 60 KW
Pre−Charge Threshold Voltage
V
CC
Undervoltage Lockout Voltage
Hysteresis of V
CC
Undervoltage Lockout (V
UVLO
), T
A
= 25°C
Hysteresis of V
CC
Undervoltage Lockout Voltage (V
UVLO
) Temperature
Coefficient
End−of−Charge Voltage Reference
V
CC
= 6.0 V, V
SNS
u
4.2 V, R
ISEL
= 60 KW, T
A
= 25°C
End−of−Charge Voltage Reference Temperature Coefficient
V
CC
= 6.0 V, V
SNS
u
4.2 V, R
ISEL
= 60 KW
NCP1800DM41
NCP1800DM42
2. See the “External Adaptor Power Supply Voltage Selection” section of the application note to determine the minimum voltage of the charger
power supplies.
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NCP1800
ELECTRICAL CHARACTERISTICS (continued)
(T
A
= 25°C for typical values, −20°C < T
A
< 85
°C
for min/max values, unless otherwise noted.)
Characteristic
Charge Disable Threshold Voltage (I
COMP
= 100
mA
min.)
V
CC
Overvoltage Lockout
Hysteresis of V
CC
Overvoltage Lockout (V
OVLO
),T
A
= 25°C
Hysteresis of V
CC
Overvoltage Lockout (V
OVLO
) Temperature Coefficient
V
SNS
Overvoltage Lockout
NCP1800DM41
NCP1800DM42
Symbol
V
CDIS
V
OVLO
−
−
V
SOVLO
−
−
Min
−
6.95
90
−
4.3
4.4
40
−
Typ
−
7.20
150
0.39
4.4
4.5
70
0.52
Max
0.08
7.45
180
−
4.5
4.6
100
−
Unit
V
V
mV
%/°C
V
mV
%/°C
Hysteresis of V
SNS
Overvoltage Lockout (V
SOVLO
), T
A
= 25°C
Hysteresis of VSNS Overvoltage Lockout (V
SOVLO
) Temperature Coefficient
T
A
= 25°C
Full−Charge Current Range with R
SNS
= 0.4
W
Full−Charge Current Range with R
SNS
= 0.8
W
Battery Drain Current (V
SNS
+ I
SNS
)
V
CC
= Ground, V
SNS
= 4.2 V
CFLG Pin Output Low Voltage (CFLG = LOW, I
CFLG
= 5.0 mA)
CFLG Pin Leakage Current (CFLG = HIGH)
I
REG1
I
REG2
I
BDRN
V
CFLGL
I
CFLGH
600
300
−
−
−
−
−
−
−
−
1000
600
0.5
0.35
0.1
mA
mA
mA
V
mA
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NCP1800
V
PCTH
, PRE−CHARGE THRESHOLD VOLTAGE (V)
3.5
V
PCHG
, PRE−CHARGE CURRENT
REFERENCE VOLTAGE (mV)
24.75
24.70
24.65
24.60
24.55
24.50
24.45
24.40
24.35
24.30
24.25
24.20
3.5
4
4.5
5
5.5
6
6.5
7
V
CC
, INPUT SUPPLY VOLTAGE (V)
V
FCHG
, FULL−CHARGE CURRENT REFERENCE VOLTAGE (V)
V
SNS
= 2.5 V
R
ISEL
= 60 kW
R
SNS
= 0.4
W
3
2.5
2
1.5
1
3.5
4
4.5
5
5.5
6
6.5
7
V
CC
, INPUT SUPPLY VOLTAGE (V)
Figure 3. Pre−Charge Threshold Voltage versus
Input Supply Voltage
26
24
22
20
18
16
14
12
10
8
6
4
2
0
0.5
0.9
1.3
Figure 4. Pre−Charge Current Reference Voltage
versus Input Supply Voltage
0.243
0.2425
0.242
0.2415
0.241
0.2405
0.24
3.2
3.4
3.6
3.8
4.0
4.2
V
SNS
, BATTERY VOLTAGE (V)
V
CC
= 5 V
R
ISEL
= 60 kW
R
SNS
= 0.4
W
V
PCHG
, PRE−CHARGE REFERENCE
CURRENT THRESHOLD VOLTAGE (mV)
V
CC
= 5 V
R
ISEL
= 60 kW
R
SNS
= 0.4
W
1.7
2.1
2.5
2.9
V
SNS
, BATTERY VOLTAGE (V)
Figure 5. Pre−Charge Current Reference
Voltage versus Battery Voltage
V
FCHG
, CHARGE CURRENT REFERENCE VOLTAGE (V)
0.2415
0.241
0.2405
0.24
0.2395
0.239
0.2385
4.5
5
5.5
6
6.5
V
SNS
= 3.6 V
R
ISEL
= 60 kW
R
SNS
= 0.4
W
Figure 6. Full−Charge Current Reference Voltage
versus Battery Voltage
24.5
24.4
24.3
24.2
24.1
24
23.9
23.8
4.5
5
5.5
6
6.5
7
V
CC
, INPUT SUPPLY VOLTAGE (V)
R
ISEL
= 60 kW
R
SNS
= 0.4
W
7
V
CC
, INPUT SUPPLY VOLTAGE (V)
Figure 7. Full−Charge Current Reference
Voltage versus Input Supply Voltage
V
EOC
, END OF CHARGE REFERENCE VOLTAGE (mV)
Figure 8. End of Charge Reference Voltage
versus Input Supply Voltage
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