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LTC4057-4.2 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC4057-4.2
Description  Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4057-4.2 Datasheet(HTML) 2 Page - Linear Technology

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LTC4057-4.2
2
4057f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Input Supply Voltage
q
4.25
6.5
V
ICC
Input Supply Current
IBAT = 0mA, RPROG = 2k
q
200
600
µA
Shutdown Mode (SHDN = 0V,
q
50
µA
VCC < VBAT, or VCC < VUV)
VFLOAT
Regulated Output (Float) Voltage
IBAT = 40mA, 0°C < TA < 85°C
4.158
4.2
4.242
V
IBAT
BAT Pin Charge Current
RPROG = 10k; Current Mode
q
93
100
107
mA
RPROG = 2k; Current Mode
q
465
500
535
mA
Shutdown Mode (SHDN = 0V)
±1
±2
µA
Sleep Mode (VCC = 0V)
±1
±2
µA
ITRIKL
Trickle Charge Current
VBAT < 2.9V; RPROG = 2k (ICHG = 500mA)
q
20
50
70
mA
VTRIKL
Trickle Charge Threshold Voltage
RPROG = 10k; VBAT Rising
2.8
2.9
3.0
V
Hysteresis
60
80
110
mV
VUV
VCC Undervoltage Lockout Voltage
From Low to High
q
3.7
3.8
3.9
V
Hysteresis
q
150
200
300
mV
VASD
VCC - VBAT Lockout Threshold Voltage
VCC from Low to High
70
100
150
mV
VCC from High to Low
5
30
70
mV
VPROG
PROG Pin Voltage
RPROG = 10k; Current Mode
q
0.93
1.0
1.07
V
VSHDN-IL
SHDN Pin Input Low Voltage
0.4
0.65
V
VSHDN-IH
SHDN Pin Input High Voltage
0.65
1.0
V
ISHDN
SHDN Pin Input Current
VSHDN = 5V
q
515
µA
TLIM
Junction Temperature in
120
°C
Constant-Temperature Mode
RON
Power FET “ON” Resistance
600
m
(Between VCC and BAT)
tSS
Soft-Start Time
IBAT = 0 to IBAT = 1000V/RPROG
100
µs
(Note 1)
Input Supply Voltage (VCC) ........................– 0.3V to 10V
PROG .............................................. – 0.3V to VCC + 0.3V
BAT .............................................................. – 0.3V to 7V
SHDN .........................................................– 0.3V to 10V
BAT Short Circuit Duration ........................... Continuous
BAT Pin Current .................................................. 800mA
PROG Pin Current ................................................ 800
µA
Junction Temperature ........................................... 125
°C
Operating Ambient Temperature Range
(Note 2) .............................................. – 40
°C to 85°C
Storage Temperature Range ................. – 65
°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
ORDER PART
NUMBER
S5 PART
MARKING
TJMAX = 125°C, (θJA = 100°C/W TO 150°C/W
DEPENDING ON PC BOARD LAYOUT)
(NOTE 3)
LTAEW
LTC4057ES5-4.2
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V
Consult LTC Marketing for parts specified with wider operating temperature ranges.
5 PROG
4 VCC
SHDN 1
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC SOT-23
GND 2
BAT 3


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