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LP28021 数据表(PDF) 6 Page - Lowpower Semiconductor inc

部件名 LP28021
功能描述  1.0A Single-chip Li-ion and Li-POL Charger with OVP Protection
PDF  11 Pages
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制造商  POWER [Lowpower Semiconductor inc]
网页  http://www.lowpowersemi.com
标志 POWER - Lowpower Semiconductor inc

LP28021 数据表(HTML) 6 Page - Lowpower Semiconductor inc

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LP28021-04
Apr.-2017
Email: marketing@lowpowersemi.com
www.lowpowersemi.com
Page 6 of 11
Preliminary Datasheet
LP28021
Electrical Characteristics
(TA=25℃. VIN=5V, unless otherwise noted.)
Symbol
Parameter
Condition
Min
Typ
Max
Units
VIN
Input Voltage
3.8
5
36
V
VOVP
OVP threshold
VIN increasing from 5~7V
5.8
6.1
6.4
V
VHYS-OVP
OVP hysteresis
VIN decreasing from 7~5V
150
mV
TOVP
OVP active time
VIN=5->10V
1
μs
TON(OVP)
OVP recovery time
VIN=10->5V to output ON
9
ms
ILIMIT
Input current limit set (LP28021)
RLIMIT=51K
1.9
A
RLIMIT=82K
1.3
A
RLIMIT=150K
0.85
A
RLIMIT=NC
2.1
2.5
A
TOCP
Over current Protection detection time
30
ms
VILIMIT
ILIMIT Voltage
0.8
V
TON(OCP)
Over current Protection recovery time
1
s
VEN(ON)
Chip enable
(LP28021A)
0.4
V
VEN(OFF)
Chip shutdown
1.4
V
IQ
Input Supply Current
Charge Mode, RIBAT=10k
300
2000
μA
Standby Mode
(Charge Terminated)
200
500
μA
VFLOAT
Regulated Output (Float) Voltage
IBAT=40mA（LP28021XXX）
4.158
4.2
4.242
V
IBAT=40mA（LP28021XXX-43）
4.3
4.35
4.4
V
IBAT
BAT Pin Current
RIBAT=1k, Current Mode
1000
mA
RIBAT=2k, Current Mode
500
mA
Standby Mode, VBAT=4.2V
-2.5
-6
μA
Shutdown Mode (RIBAT NC)
±1
±2
μA
Reverse Current, VBAT=-4.2V
-1
mA
ITRIKL
Trickle Charge Current
VBAT<2.8V
30
mA
VTRIKL
Trickle Charge Threshold Voltage
RIBAT=10k, VBAT Rising
2.8
2.9
3.0
V
VTRHYS
Trickle Charge Hysteresis Voltage
RIBAT=10k
120
mV
VUV
VIN Under voltage Lockout Threshold
VVO from Low to High
3.8
V
VUVHYS
VIN Under voltage Lockout Hysteresis
500
mV
VASD
VVO–VBAT Lockout Threshold Voltage
VVO from Low to High
100
mV
VVO from High to Low
80
mV
ITERM
C/10 Termination Current Threshold
RIBAT = 10k
10
%IBAT
RIBAT = 2k
10
%IBAT
VISET
IBAT Pin Voltage
RIBAT=10k, Current Mode
1
V
I(CHRG/STDBY)
CHRG/STDBY Pin Weak Pull-Down Current
V(CHRG/STDBY)= 5V
5
μA
V(CHRG/STDBY)
CHRG/STDBY Pin Output Low Voltage
I(CHRG/STDBY)=5mA
0.35
0.6
V
ΔVRECHRG
Recharge Battery Threshold Voltage
VFLOAT-VRECHRG
100
150
200
mV
TLIM
Junction Temperature in Constant
Temperature Mode
150
℃
ΔTLIM
OTP hysteresis
20
℃
RON
Power FET “ON” Resistance
(Between VO and BAT)
300
mΩ



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