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LTC4001-1 Datasheet, PDF (2/20 Pages) Linear Technology – 2A Synchronous Buck Li-Ion Charger | |||
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LTC4001-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PVIN, VINSENSE
t < 1ms, DC < 1% .................................... â0.3V to 7V
Steady State............................................. â0.3V to 6V
SW, SENSE, BAT, BATSENS, SS, FAULT, CHRG, EN, NTC,
PROG, IDET, TIMER Voltage........................ â 0.3V to 6V
Operating Temperature Range (Note 3) .. â40°C to 85°C
Operating Junction Temperature
(Note 5) ................................................ â40°C to 125°C
Storage Temperature Range.................. â65°C to 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
BAT 1
12 PROG
SENSE 2
11 NTC
17
PGND 3
10 FAULT
GNDSENS 4
9 VINSENSE
5678
UF PACKAGE
16-LEAD (4mm à 4mm) PLASTIC QFN
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC4001EUF-1#PBF
LTC4001EUF-1#TRPBF 40011
16-Lead (4mm à 4mm) Plastic QFN
Consult LTC Marketing for parts speciï¬ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ï¬nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speciï¬cations, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
â40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VIN = 5V, VEN = 0V, RPROG = 549Ω, RIDET = 549Ω, unless otherwise
speciï¬ed.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VIN
Supply Voltage
IIN
VFLOAT VBAT Regulated Float Voltage
(Note 2)
PVIN Connected to VINSENSE, PROG and IDET
Pins Open, Charger On
Shutdown, EN = VIN
Measured from BATSENS to GNDSENS
4
5.5
V
2
mA
50
μA
â 4.059
4.1
4.141
V
4.079
4.1
4.121
V
IBAT
ITRIKL
VTRIKL
VUVL
ÎVUVL
Current Mode Charge Current
Trickle Charge Current
Trickle Charge Threshold
VIN Undervoltage Lockout Voltage
VIN Undervoltage Lockout
Hysteresis
RPROG = 549Ω, VBAT = 3.5V
SRhPuROtdGo=wn1,.1E0Nk,=VVBIANT = 3.5V
VBAT = 2V
VBAT Rising
VBAT Falling
VIN Rising, Measured from VINSENSE to GNDSENS
Measured from VINSENSE to GNDSENS
1.8
2
2.2
A
0.9
1
1.1
A
±5
μA
35
50
65
mA
3.05
3.1
3.20
V
2.85
3.0
3.05
V
2.7
2.82
V
100
mV
VASD
Automatic Shutdown Threshold VINSENSE â VBATSENS Rising (Turn-On), VBATSENSE = 4V
200
250
300
mV
Voltage
VINSENSE â VBATSENS Falling (Turn-Off), VBATSENSE = 4V
15
30
60
mV
40011fa
2
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