LP28056 Datasheet, PDF (4/9 Pages) Lowpower Semiconductor inc – Programmable Charge Current Up to 1200mA

Preliminary Datasheet
LP28056
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
BAT Pin Current
0°C ≤ TA ≤ 85°C, IBAT = 40mA
RISET = 1k, Current Mode
RISET = 2k, Current Mode
Standby Mode, VBAT = 4.2V
Shutdown Mode (RISET Not
Connected) Sleep Mode, VCC = 0V
4.158
840
386
0
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
20
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
4.2
880
44
-2.5
±1
±1
45
2.9
80
3.8
200
1.21
1.0
100
30
0.10
0.10
1.0
20
0.35
150
100
3
6.2
50
4.242 V
920
mA
455
-6
±2
±2 ^uA
70 _mA
3.0 V
110 _mV
3.95 _V
300 _mV
1.30 _V
1.1 _V
140 _mV
50
0.115
0.115
1.1
35
mV
mA/mA
mA/mA
V
uA
0.6 _V
200 _mV
120 _°C
600 _mΩ
uS
uA
6.5
V
LP28056 – 01 Ver. 1.1 Datasheet
FEB.-2012
www.lowpowersemi.com
Page 4 of 9