Fairchild Semiconductor FAN7563 Datasheet

FAN7563/FAN7564

Lithium-Ion Charger Controller

www.fairchildsemi.com

Features

• Constant Voltage & Constant Current Control

• Wide Operating Range of 2.5V ~ 16V

• Low-Side Source Return Current Sensing

• Externally Adjustable Charging Current Control

• Charging Current Monitoring

• Precision LDO Regulator Drive Ouptut (Adj) (Only FAN7564)

• Error signals of Output Dropout (LDO) (Only FAN7564)

• Current Limit (LDO) ( FAN7564 Only)

Description

The FAN7563/FAN7564 is designed for Lithium-ion battery charger. This controls charging current and voltage of Lithium - ion battery as constant current and constant voltage control IC and can be used for stand alone charger (FAN7563) and micom interface charger(FAN7564). In addition LDO regulator driving output which is integrated within FAN75 64 enables to offer accurate reference voltag e to power supply of micro controller, therefore, it features increasing stability and efficiency of charger set as well as minimizing external components of the set. Additionally, FAN7563/FAN7564 provide the protection functions like error flag, short circuit protection(LDO), and charging current control disable.

8-SOP

14-SOP

Internal Block Diagram

14(8)

VCC

OUTPUT ISEN

123 4

VSEN IREF

20kΩ

12(6)13(7)

Vref(1.244V)

CS GND

MONIT

×5

×5×5

Reference

Internal

Bias

891011(5)

ERROR

CHA-

LDODRV

UVLO

Reference

Bias

LDO

Drive

8SOP

14SOP

Rev. 1.0.3

FAN7563/FAN7564

Pin Assignments

OUTPUT

ISEN

FAN7563

VSEN

GND

IREF

MONIT

Pin Definitions

Pin Number Pin Name Pin Function Descrition

1OUTPUT 2I 3CS 4 GND Ground 5MONIT

7V 8V

SEN

REF

SEN

Output pin for charging control. An external photocoupler is drived from the output for constant voltage and constant current charging control.

Reference input for current amplifier. Charging current sensing input . It is connected to a sense resistor

(system ground)

Charging current monitoring output. This pin is connected to a micro controller and detects the amplified voltge derived from CS pin.

Reference current control input. The Amplifier reference current is controlled according to the resistor which is connected to the pin I

Voltage sensing input for constant battery voltage control. It is normally connected to the battery charger output through a resistor divider.

Power supply input. The typical operating voltage range is 2.5V to 16V.

REF

Pin Assignments (Continued)

FAN7563/FAN7564

Output pin for charging control. An external photocoupler is drived from the output for constant voltage and constant current charging control.

Constant current loop reference Input. Charging current sensing input . It is connected to a sense resistor

(system ground)

Charging current monitoring feedback input. monitoring output voltage can be changed by alternating the value of external resistor which is connected to the pin6, CHA-

LDO output voltage sensing input. It is normally connected to the LDO output through a resistor divider.

LDO driving output. This is connected to the base of external TR (KSA539)

LDO dropout error flag. This keeps the error signal off until the bias voltage for micro controller reaches the threshold voltage. Error signal becomes ON when the voltage reaches 4.8V. (With hysteresis 60mV)

Charging current monitoring output. This pin is connected to a micro controller and detects the amplified voltage derived from CS pin.

Reference current control input. The Amplifier reference current is controlled according to the resistor which is connected to the pin I

REF

Voltage sensing input for constant Battery voltage control. It is normally connected to the Battery charger output through a resistor divider.

Power supply input. The typical operating voltage range is 2.5V to 16V.

FAN7564

VSEN

IREF

MONIT

ERROR

LDODRV

OUTPUT

ISEN

GND

CHA-

Pin Definitions

Pin Number Pin Name Pin Function & Descrition

1OUTPUT

2I 3CS 4 GND Ground

6CHA-

7FB

8LDODRV

9 ERROR

11 MONIT

12 I

13 V

14 V

(Continued)

SEN

REF

SEN

FAN7563/FAN7564

Absolute Maximum Ratings (Ta = 25°°°°C)

Parameter Symbol Value Unit

Supply Voltage V

2.5 ~ 16 V Ldodrv Sink Current Idrv 2 mA Output Sink Current I

20 mA Power Dissipation Pd 0.75 W Operating Temperature Range Topr -25 ~ 85 °C Storage Temperature Range Tstg -65 ~ 150 °C

Electrical Characteri sti c (FAN 7 563)

( Vcc = 6V, Ta= 25°C,for min/max values Ta is the operating juntion temperature range that applies(NOTE 1), unless otherwise noted.))

Parameter Symbol Conditions Min. Typ. Max. Unit

TOTAL DEVICE

Input Supply Current I

REFERENCE SECTION

Reference voltage Vref

CONTROL PART UVLO Section

High Threshold Voltage Vth(H) - - 2.5 2.6

Hysteresis 2 Vhys2 - - 0.1 -

VOLTAGE SENSE SECTION

Voltage Sense Threshold Voltage

Threshold Voltage Temperature Coefficient

Vvsen

∆Vvsen/

∆T

Input Bias Current Ii - - 40 - nA Transconductance gm (V) - - 1 - S

CURRENT SENSE SECTION

Current Sense Threshold voltage Visen Transconductance gm - - 1 - S Current Reference Voltage Viref

OUTPUT SECTION

Output Sink Current I Output Saturation Voltage Vsat I

VCC=6V, Iload=1mA, IO=0A - - 3 mA

=6V,Iload=50mA,Ta=25°C 1.23 1.245 1.26

Full Temperature Range 1.22 1.245 1.27

= 6V, Ta = 25°C 1.23 1.245 1.26

Full Temperature Range 1.22 1.245 1.27

= 6V, Ta=25°C -190 -200 -210 mV

- ±0.01 - %/°C

Full Temperature Range - 0 - mV/°C

Rpin12=25KΩ, Ta=25°C 1.23 1.245 1.26 Full Temperature Range 1.22 1.245 1.27

=5mA - 200 400 mV

-5--mA

VLow Threshold Voltage Vth(L) - 2.3 2.4 -

NOTE:

1. Tested ambient temperature range for the FAN7563: Tlow = -25°C, Thigh=85°C

--- -=

FAN7563/FAN7564

Electrical Characteristic (Continued) (FAN7564)

(VCC = 6V, Ta= 25°C,for min/max values Ta is the operating juntion temperature range that applies (NOTE 1), unless otherwise noted.)

Parameter Symbol Conditions Min. Typ. Max. Unit

TOTAL DEVICE

Input Supply Current I

REFERENCE SECTION

Reference voltage Vref

REGULATOR PART EXTERNAL OUTPUT SECTION (NOTE2)

Line Regulation ∆Vr(Ii) 6V < Load Regulation ∆Vr(I Current Limit I

Output Voltage V

INTERNAL DRIVE SECTION

LDODRV Sink Current Idrv V

ERROR COMPARATOR SECTION

Output Low Voltage V High Threshold Voltage Vth - - 4.8 4.9 V Low Threshold Voltage Vtl - 4.64 4.74 - V Hysteresis1 Vhys1 - - 0.1 - mV

CONTROL PART UVLO Section

High Threshold Voltage Vth(H) - - 2.5 2.6

Hysteresis 2 Vhys1 - - 60 -

VOLTAGE SENSE SECTION

Voltage Sense Threshold Voltage

Threshold Voltage Temperature Coefficient

Vvsen

∆Vvsen/

∆T

Input Bias Current Ii - - 40 - nA Transconductance gm (V) - - 1 - S

CURRENT SENSE SECTION

Current Sense Threshold voltage Visen Transconductance gm - - 1 - S Current Reference Voltage Viref

VCC=6V, Iload=1mA, IO=0A - - 3 mA

=6V,Iload=50mA,Ta=25°C 1.23 1.245 1.26

Full Temperature Range 1.22 1.245 1.27

VCC < 15V - - 0.5 %max

)1mA < Iload < 100mA - - 0.5 %max

VO=0V 110 - - mA VCC=6V, Iload=50mA,

Ta=25°C

1mA <

Iload < 100mA

Full Temperature Range

=6V - - 2 mA

VCC=(VO-0.5)V, IOL=500µA - 150 400 mV

= 6V, Ta = 25°C 1.23 1.245 1.26

4.95 5.0 5.05

4.88 5.0 5.12

Full Temperature Range 1.22 1.245 1.27

--±0.01 - %/°C

= 6V, Ta=25°C -190 -200 -210 mV

Full Temperature Range - 0 - mV/°C

Rpin12=25KΩ, Ta=25°C 1.23 1.245 1.26 Full Temperature Range 1.22 1.245 1.27

VFull Temperature Range 4.9 5.0 5.1

VLow Threshold Voltage Vth(L) - 2.3 2.4 -

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