Preliminary Datasheet

LP28012

LP28012 – 00

Feb.-2014

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

Page 4 of 10

Electrical Characteristics

(The specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V,

unless otherwise noted.)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP.

MAX

UNITS

VIN

Adapter/USB Voltage Range

2.65

5

7

V

ICC

Input Supply Current

Charge Mode, RISET = 10k

300

2000

uA

Standby Mode (Charge Terminated)

200

500

Shutdown Mode (RISET Not Connected,

VCC < VBAT, or VCC < VUV)

25

50

VFLOAT

Regulated Output (Float) Voltage

0°C ≤ TA ≤ 85°C, IBAT = 40mA

4.158

4.2

4.242

V

IBAT

BAT Pin Current

RISET = 1k, Current Mode

1000

mA

RISET = 2k, Current Mode

500

Standby Mode, VBAT = 4.2V Shutdown

Mode (RISET Not Connected)

Sleep Mode, VCC = 0V

0

-2.5

±1

±1

-6

±2

±2

uA

ITRIKL

Trickle Charge Current

VBAT < VTRIKL, RISET = 2k

60

mA

VTRIKL

Trickle Charge Threshold Voltage

RISET = 10k, VBAT Rising

2.8

2.9

3.0

V

VTRHYS

Trickle Charge Hysteresis Voltage

RISET = 10k

120

mV

VUV

VCC Under voltage Lockout Threshold

From VCC Low to High

3.9

V

VUVHYS

VCC Under voltage Lockout Hysteresis

150

200

300

mV

VMSD

Manual Shutdown Threshold Voltage

ISET Pin Rising

2

V

ISET Pin Falling

2.2

V

VASD

VCC – VBAT Lockout Threshold Voltage

VCC from Low to High

70

100

140

mV

VCC from High to Low

5

30

50

mV

ITERM

C/10 Termination Current Threshold

RISET = 10k

0.085

0.10

0.115

mA/mA

RISET = 2k

0.085

0.10

0.115

mA/mA

VISET

ISET Pin Voltage

RISET = 10k, Current Mode

2

V

ISTAT

STAT Pin Weak Pull-Down Current

VSTAT = 5V

5

uA

VSTAT

STAT Pin Output Low Voltage

ISTAT = 5mA

0.35

0.6

V

ΔVRESTAT

Recharge Battery Threshold Voltage

VFLOAT - VRESTAT

100

150

200

mV

TLIM

Junction Temperature in Constant Temperature Mode

120

°C

RON

Power FET “ON” Resistance (Between VCC and BAT)

600

mΩ

Tss

Soft-Start Time

IBAT = 0 to IBAT =850V/RISET

100

uS

IISET

ISET Pin Pull-Up Current

150

uA