LP28052A Datasheet, PDF (4/9 Pages) Lowpower Semiconductor inc – Vin Over Voltage Protection:6.5V

Preliminary Datasheet LP28052A
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
VIN
ICC
VFLOAT
IBAT
ITRIKL
VTRIKL
VTRHYS
VUV
VUVHYS
VMSD
VASD
ITERM
VISET
ISTAT
VSTAT
ΔVRESTAT
TLIM
RON
tSS
IISET
VIN OVP
PARAMETER
CONDITIONS
MIN
Adapter/USB Voltage Range
Input Supply Current
Charge Mode (Note 4), RISET = 10k
Standby Mode (Charge Terminated)
Shutdown Mode (RISET Not
Connected,
VCC < VBAT, or VCC < VUV)
2.65
Regulated Output (Float) Voltage 0°C ≤ TA ≤ 85°C, IBAT = 40mA
4.158
BAT Pin Current
RISET = 1k, Current Mode
RISET = 2k, Current Mode
Standby Mode, VBAT = 4.2V
0
Shutdown Mode (RISET Not
Connected) Sleep Mode, VCC = 0V
Trickle Charge Current
VBAT < VTRIKL, RISET = 2k (Note 5)
Trickle Charge Threshold Voltage RISET = 10k, VBAT Rising (Note 5)
Trickle Charge Hysteresis Voltage RISET = 10k (Note 5)
VCC Undervoltage Lockout Threshold From VCC Low to High
VCC Undervoltage Lockout Hysteresis
ISET Pin Rising
Manual Shutdown Threshold Voltage _{ISET Pin Falling}
VCC – VBAT Lockout Threshold
Voltage
VCC from Low to High
VCC from High to Low
C/10 Termination Current Threshold
RISET = 10k (Note 6)
RISET = 2k
ISET Pin Voltage
STAT Pin Weak Pull-Down Current
STAT Pin Output Low Voltage
RISET = 10k, Current Mode
VSTAT = 5V
ISTAT = 5mA
2.8
60
3.7
150
1.15
0.9
70
5
0.085
0.085
0.9
8
Recharge Battery Threshold Voltage VFLOAT - VRESTAT
100
Junction Temperature in Constant Temperature Mode
Power FET “ON” Resistance (Between VCC and BAT)
Soft-Start Time
ISET Pin Pull-Up Current
Over voltage protection
IBAT = 0 to IBAT =850V/RISET
5.9
TYP. MAX UNITS
5
7
V
300 2000
200 500 ^uA
25
50
4.2
4.242 V
1000
mA
50
-2.5 -6
±1 ±2
±1 ±2 ^uA
50
mA
2.9
3.0 V
80
110 _mV
3.8 3.95 _V
200 300 _mV
1.21 1.30 _V
1.0
1.1 _V
100 140 _mV
30
50 mV
0.10 0.115 _mA/mA
0.10 0.115 _mA/mA
1.0
1.1 _V
20
35 _uA
0.35 0.6 _V
150 200 _mV
120 _°C
600 _mΩ
100
uS
3
uA
6.2
6.5
V
LP28052A – 01 Version 1.1 Datasheet
FEB.-2012
www.lowpowersemi.com
Page 4 of 9