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Integrated Charger/Boost Convertor with Power Path Control

Features

Adaptor Input Detection and Power Path Control Built-in 90m Ω Power Switch for Power Path Control

Adapter Input Over-Voltage Protection

High Accuracy Switching Charger for 1 Cell Li-lon battery with Internal Compensation

±0.5% Accuracy Battery Charger Output Voltage Charger Status Flag Output

Adapter Input Current Limit Controller with Built-in Current Sense Resistor

Trickle Charging and Defective Battery Detec-tion

High Efficiency Synchronous Boost Convertor Adjustable Output of Boost Convertor

Enable and Current Limit Control Pin for Boost Convertor.

Output Short Circuit Protection for Boost Con-vertor

Available for 4.2V/4.3V/4.35V Charge Voltage Setting

Available for 2A/1.5A Charge Current

SOP-8 (FD) Package

Applications

Mobile Battery Bank

General Description

G5214 is an integrated charger/boost convertor with power path control for 1 cell Li-lon battery bank. The power path controller detects adapter input and control internal power switch of power path with over-voltage and over-current protection.

The system operates in charger mode when adapter plug in. Charge current, battery voltage and adapter input current limit are regulated by constant off time buck controller with internal power MOSFET. The sys-tem enters trickle charge if battery voltage is too low. The charging stops if defective battery is detected. Charge Voltage has 2 options, 4.35V and 4.2V. Charge Current has 2 options, 2A and 1.5A. FLAG output indicates the charger status.

The system operates in boost mode if adapter is absent and battery voltage is high enough. The output voltage is adjustable by external resistors with over current and short circuit protection. A 3-levels logic control the on/off and over-current of boost convertor.

Ordering Information

ORDER NUMBER

MARKING

CHARGE Current

CHARGE Voltage TEMP. RANGE PACKAGE (Green)

G5214AF11U G5214A 2A 4.35V -40°C to +85°C SOP-8 (FD) G5214CF11U G5214C 2A 4.2V -40°C to +85°C SOP-8 (FD) G5214DF11U G5214D 1.5A 4.35V -40°C to +85°C SOP-8

(FD) G5214FF11U G5214F 1.5A

4.2V -40°C to +85°C SOP-8 (FD)

Note: F1:SOP-8 (FD) 1: Bonding Code

U: Tape & Reel

Pin Configuration

VADP

VSYS EN/OC

LX CSIP SOP-8 (FD)

VBAT FLAG

BTFB Note: Connect the thermal PAD to GND for proper function and excellent power dissipation

Absolute Maximum Ratings

Supply Voltage (ADP to GND) . . . . . . . . .-0.3V to 6.5V Supply Voltage (ADP to GND, <30µS pulse )

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to 9V Supply Voltage (VSYS, VBAT to GND) . . . -0.3V to 6V CSIP to GND . . . . . . . . . . . . . . . . . . . . -0.3V to 6V LX to GND . . . . . . . . . . . . . . . . . . -0.5V to VSYS+0.5V Other Pins to GND. . . . . . . . . . . . . . . . . . . .-0.3V to 6V Thermal Resistance Junction to Ambient, (θJA )

SOP-8 (FD) . . . . . . . . . . . . . . . . . . . . . . .132°C/W (1) SOP-8 (FD) (1in 2). . . . . . . . . . . . . . . . . . . . 108°C/W (2) Continuous Power Dissipation (T A = +25°C)

SOP-8 (FD) . . . . . . . . . . . . . . . . . . . . . . .0.9W (1) SOP-8 (FD) (1in 2). . . . . . . . . . . . . . . . . . . . . . .1.2W (2) Thermal Resistance Junction to Case, (θJC )

SOP-8 (FD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12°C/W

Storage Temperature . . . . . . . . . . . . -65°C to +150°C Junction Temperature . . . . . . . . . . . . -10°C to +150°C Reflow Temperature (soldering, 10sec) . . . . . . .260°C ESD Protection (Human Body Mode) . . . . . . . . . . .2kV

Recommended Operation Conditions

Supply Voltage (ADP to GND) . . . . . . . 4.8V to 5.5V Supply Voltage (VBAT to GND) . . . . . . .3V to 4.2V Operation Temperature (T A ) . . . . . . . -40°C to +85°C

Stress beyond those listed under “Absolute Maximum Ratings ” may cause permanent damage to the device.

Note: (1)

: Please refer to Minimum Footprint PCB Layout Section. (2)

: Please refer to 1in 2 of 1oz PCB Layout Section.

Electrical Characteristics

ADP =5V, V BAT =3.7V, T A =25°C, unless otherwise noted.

The device is not guaranteed to function outside its operating conditions. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified.

PARAMETER CONDITION MIN TYP MAX UNITS

Battery Quiescent Current I VSYS =0 --- 500 700 µA

VBAT=2.5V, Boost Convertor Stops --- 20 30 Battery Leakage Current

VBAT=3.7V, Pull EN/OC low to shutdown

--- 35 45 µA

VBAT Rising

2.6

2.75

2.9

VBAT UVLO/ Trickle Charge Threshold

VBAT Falling 2.5 2.65 2.8

V

Switch from VADP to VSYS --- 90 100

m Ω Switch from VSYS to LX, V SYS =5V ---

44 52 m Ω On-Resistance of Switches Switch from LX to GND, V SYS =5V --- 39 45 m Ω VSYS Short Circuit Blanking Time

26

34

43

ms

VSYS Short Circuit Auto-Restart Time 177 238 300 ms

EN/OC input high threshold 4.5 --- ---

EN/OC input low threshold --- --- 0.3 EN/OC Threshold EN/OC floating logic threshold 1.1 --- 3 V FLAG On Resistance ADP=5V

---

18 40 Ω FLAG Pin Leakage

FLAG=6V

--- 0.1 0.5 µA Thermal Shutdown Threshold Temperature Rising --- 150 --- °C Thermal Shutdown Hysteresis

---

25

---

°C

Adapter Power Path Control ADP rising 4.65 4.74 4.83 V Adapter Power Good Threshold ADP falling 4.47 4.56 4.64 V ADP rising

5.85

6.02 6.2 V Adapter OVP Threshold ADP falling 5.65 5.78 5.93 V G5214A/B/C, VSYS =0V 2.3 2.6 3.1

Current Limit of Power Switch

G5214D/E/F, VSYS =0V

1.8

2.1 2.6

A