ON Semiconductor NCP1800 Technical data

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

• 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 Under Voltage Lockout

• Micro8 Package

Applications

• Cellular Phones, PDAs

• Handheld Equipment

• Battery Operated Portable Devices

8

PIN CONNECTIONS AND

ISNS

ISEL

COMP/DIS

GND

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Micro8 CASE 846A DM SUFFIX

1

MARKING DIAGRAM

18 2

3 4

X = A for 41 Device

A = Assembly Location L = Wafer Lot Y = Year W = Work Week

180X

AYW

B for 42 Device

OUT V

7

CC

6

CFLG

5

VSNS

PMOS/Schottky (FETKY): NTHD4P02FT1 (ChipFET) PMOS: NTGS3441T1 (TSOP 6) Schottky: MBRM130L

V

in

CC

OUT

NCP1800

= 560 nF

COMP

ISNS

VSNS

ISEL

R

ISEL

60 k

Host or LED

Host

Processor

C

GND

V

CFLG COMP/

DIS

R

COMP

R

COMP

C

COMP

= 15 , C

in

Figure 1. Typical Application

ORDERING INFORMATION

Device Package Shipping

R

SNS

C

out

NCP1800DM41R2 Micro8 4000 Units/Reel NCP1800DM42R2 Micro8 4000 Units/Reel

 Semiconductor Components Industries, LLC, 2003

May, 2003 - Rev. 4

1 Publication Order Number:

NCP1800/D

NCP1800

R

SNS

C

in

V

CC

Active Pullup

OUT

I

SNS

ISEL

R

ISEL

CFLG

CC

Chip

Enable

I

REF

V

REF

V

REF

CONTROL

CV

EOC Detect

V

REF

EOC REF

V

SNS

Input UV Lockout

LOGIC

V

REF

V

REF

Input OV Lockout

Pre CHG Complete

V

SNS

Overvoltage

V

REF

V

REF

C

out

GND COMP/DIS

Figure 2. NCP1800 Internal Block Diagram

PIN FUNCTION DESCRIPTIONS

Pin Symbol Description

1 I

SNS

This is one of the inputs to the current regulator and the end-of-charge comparator. 2 ISEL A resistor from this pin to ground pin sets the full charging current regulation level. 3 COMP/DIS 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. 4 GND This is the ground pin of the IC. 5 V

SNS

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. 6 CFLG An open drain output that indicates the battery charging status. 7 V

CC

This is a multifunctional pin that powers the device and senses for over and undervoltage conditions. 8 OUT This is a current source driver for the pass transistor.

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2

NCP1800

Regulated Out ut Voltage NCP1800DM41

V

REG

4.059

4.1

4.141

V

MAXIMUM RATINGS

Rating Symbol Value Unit

Supply Voltage V Voltage Range for:

CC

VSNS Input ISNS Input COMP/DIS Input ISEL Input CFLG Output Out Output

OUT Sink Current Io 20 mA Thermal Resistance, Junction to Air R Operating Ambient Temperature T Operating Junction Temperature T Storage Temperature T



stg

JA

A

J

ATTRIBUTES

Characteristic Value

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) Level 1 Transistor Count 1015 Latch-up Current Maximum Rating per JEDEC standard JESD78 ≤ 150 mA

1. For additional information, see Application Note AND8003/D.

16 V

-0.3 to 6.0

-0.3 to V

CC

240

-20 to +85 °C

-20 to +150 °C

-55 to +150 °C

≤ 2 kV

≤ 200 V

V

°C/W

ELECTRICAL CHARACTERISTICS (T

Characteristic

Input Supply Voltage (Note 2) V Input Supply Current I Regulated Output Voltage NCP1800DM41 V

Full-Charge Current Reference Voltage

V

= 6.0 V, 3.0 V  V

CC

Full-Charge Current Reference Voltage Temperature Coefficient

= 6.0 V, 3.0 V  V

V

CC

Pre-Charge Current Reference Voltage

V

= 6.0 V, V

CC

 3.0 V, R

SNS

Pre- Charge Current Reference Voltage Temperature Coefficient

V

= 6.0 V, V

CC

 3.0 V, R

SNS

Pre-Charge Threshold Voltage NCP1800DM41

VCC Under Voltage Lockout Voltage V Hysteresis of VCC Under Voltage Lockout (V Hysteresis of VCC Under Voltage Lockout Voltage (V

 4.2 V, R

SNS

 4.2 V, R

SNS

= 60 K TA = 25°C

ISEL

= 60 K

ISEL

= 25°C for typical values, -20°C < TA < 85 °C for min/max values, unless otherwise noted.)

A

Symbol Min Typ Max Unit

2.5 - 16 V

- 140 250 A

4.059 4.1 4.141 V

4.158

4.2

4.242

210 240 270 mV

- -0.163 - %/°C

13.2 24 34.8 mV

- -0.180 - %/°C

2.78

2.85

2.93

3.0

3.08

3.15

3.43 3.56 3.69 V

= 60 K TA = 25°C

ISEL

= 60 K

ISEL

), TA = 25°C - 90 150 195 mV

UVLO

NCP1800DM42

) Temperature

CC

REG

V

FCHG

TCV

FCHG

V

PCHG

TCV

PCHG

V

PCTH

UVLO

- - 0.261 - %/°C

V

Coefficient

End-of-Charge Voltage Reference

V

CC

= 6.0 V, V

 4.2 V, R

SNS

= 60 K TA = 25°C

ISEL

End-of-Charge Voltage Reference Temperature Coefficient

V

= 6.0 V, V

CC

 4.2 V, R

SNS

ISEL

= 60 K

V

TCV

EOC

20 24 28 mV

- -0.160 - %/°C

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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3

NCP1800

ELECTRICAL CHARACTERISTICS (continued)

(TA = 25°C for typical values, -20°C < TA < 85 °C for min/max values, unless otherwise noted.)

Characteristic

Charge Disable Threshold Voltage (I

= 100 A min.) V

COMP

VCC Over Voltage Lockout V Hysteresis of VCC Over Voltage Lockout (V Hysteresis of VCC Over Voltage Lockout (V V

Over Voltage Lockout NCP1800DM41

SNS

),TA = 25°C - 90 150 180 mV

OVLO

) Temperature Coefficient - - 0.39 - %/°C

OVLO

NCP1800DM42 Hysteresis of V Hysteresis of V

= 25°C

T

A

Full Charge Current Range with R Full Charge Current Range with R Battery Drain Current (V

V

= Ground, V

CC

CFLG Pin Output Low Voltage (CFLG = LOW, I

Over Voltage Lockout (V

SNS

Over Voltage Lockout (V

SNS

SNS SNS

+ I

SNS

= 4.2 V

SNS

), TA = 25°C - 40 70 100 mV

SOVLO

) Temperature Coefficient

SOVLO

= 0.4  I = 0.8  I

)

= 5.0 mA) V

CFLG

CFLG Pin Leakage Current (CFLG = HIGH) I

Symbol Min Typ Max Unit

CDIS

OVLO

V

SOVLO

REG1 REG2

I

BDRN

CFLGL

CFLGH

- - 0.08 V

6.95 7.20 7.45 V

4.3

4.4

4.5

4.6

V

- - 0.52 - %/°C

600 - 1000 mA 300 - 600 mA

- - 0.5 A

- - 0.35 V

- - 0.1 A

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4

NCP1800

3.5

3

2.5

2

1.5

1

, PRE-CHARGE THRESHOLD VOLTAGE (V)

VCC, INPUT SUPPLY VOLTAGE (V)

PCTH

V

Figure 3. Pre-Charge Threshold Voltage versus

Input Supply Voltage

26 24

22 20 18

16 14 12 10

VCC = 5 V

= 60 k

R

ISEL

R

= 0.4 

SNS

8 6

, PRE-CHARGE REFERENCE

4

PCHG

2

V

0

CURRENT THRESHOLD VOLTAGE (mV)

V

, BATTERY VOLTAGE (V)

SNS

Figure 5. Pre-Charge Current Reference

Voltage versus Battery Voltage

24.75

24.70 V

= 2.5 V

24.65

24.60

R R

SNS

ISEL SNS

= 60 k

= 0.4 

24.55

24.50

24.45

24.40

, PRE-CHARGE CURRENT

24.35

24.30

REFERENCE VOLTAGE (mV)

PCHG

V

24.25

24.20

6.5 6.5

765.554.543.5 VCC, INPUT SUPPLY VOLTAGE (V)

Figure 4. Pre-Charge Current Reference Voltage

versus Input Supply Voltage

0.243 VCC = 5 V

R

0.2425

0.242

0.2415

0.241

0.2405

0.24

2.92.52.11.71.30.90.5 , FULL-CHARGE CURRENT REFERENCE VOLTAGE (V)

Figure 6. Full-Charge Current Reference Voltage

FCHG

V

= 60 k

ISEL

= 0.4 

R

SNS

V

, BATTERY VOLTAGE (V)

SNS

versus Battery Voltage

765.554.543.5

4.24.03.83.63.43.2

0.2415

0.241

0.2405

0.24

0.2395

0.239

0.2385

, CHARGE CURRENT REFERENCE VOLTAGE (V)

FCHG

V

= 3.6 V

SNS

R

= 60 k

ISEL

= 0.4 

R

SNS

VCC, INPUT SUPPLY VOLTAGE (V)

Figure 7. Full-Charge Current Reference

Voltage versus Input Supply Voltage

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76.565.554.5

5

24.5

24.4

24.3

24.2

24.1

24

23.9

23.8

, END OF CHARGE REFERENCE VOLTAGE (mV)

EOC

V

R

= 60 k

ISEL

R

= 0.4 

SNS

VCC, INPUT SUPPLY VOLTAGE (V)

Figure 8. End of Charge Reference Voltage

versus Input Supply Voltage

76.565.554.5