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LTC4088EDE Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4088EDE
Description  High Effi ciency Battery Charger/USB Power Manager
Download  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4088EDE Datasheet(HTML) 3 Page - Linear Technology

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LTC4088
3
4088f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VUVLO
VBUS Undervoltage Lockout
Rising Threshold
Falling Threshold
3.95
4.30
4.00
4.35
V
V
VDUVLO
VBUS to BAT Differential Undervoltage
Lockout
Rising Threshold
Falling Threshold
200
50
mV
mV
VOUT
VOUT Voltage
1x, 5x, 10x Modes, 0V < BAT ≤ 4.2V,
IOUT = 0mA, Battery Charger Off
3.5
BAT + 0.3
4.7
V
USB Suspend Modes, IOUT = 250µA
4.5
4.6
4.7
V
fOSC
Switching Frequency
1.8
2.25
2.7
MHz
RPMOS
PMOS On Resistance
0.18
Ω
RNMOS
NMOS On Resistance
0.30
Ω
IPEAK
Peak Inductor Current Clamp
1x, 5x Modes
10x Mode
2
3
A
A
RSUSP
Suspend LDO Output Resistance
15
Ω
Battery Charger
VFLOAT
BAT Regulated Output Voltage
0°C ≤ TA ≤ 85°C
4.179
4.165
4.200
4.200
4.221
4.235
V
V
ICHG
Constant-Current Mode Charge Current
RPROG = 1k
RPROG = 5k
980
192
1030
206
1080
220
mA
mA
IBAT
Battery Drain Current
VBUS > VUVLO, PowerPath Switching
Regulator On, Battery Charger Off,
IOUT = 0µA
3.5
5
µA
VBUS = 0V, IOUT = 0µA (Ideal Diode Mode)
23
35
µA
VPROG
PROG Pin Servo Voltage
1.000
V
VPROG,TRKL
PROG Pin Servo Voltage in Trickle
Charge
BAT < VTRKL
0.100
V
hPROG
Ratio of IBAT to PROG Pin Current
1031
mA/mA
VTRKL
Trickle Charge Threshold Voltage
BAT Rising
2.7
2.85
3.0
V
ΔVTRKL
Trickle Charge Hystersis Voltage
135
mV
VRECHRG
Recharge Battery Threshold Voltage
Threshold Voltage Relative to VFLOAT
–80
–100
–120
mV
tTERM
Safety Timer Termination Period
Timer Starts when VBAT = VFLOAT
3.2
4.0
4.8
Hour
tBADBAT
Bad Battery Termination Time
BAT < VTRKL
0.4
0.5
0.6
Hour
IC/X
Battery Charge Current at Programmed
End of Charge Indication
RC/X = 1k
RC/X = 5k
85
100
20
115
mA
mA
VC/X
C/X Threshold Voltage
100
mV
hC/X
Battery Charge Current Ratio to C/X
1031
mA/mA
VCHRG
CHRG Pin Output Low Voltage
ICHRG = 5mA
65
100
mV
ICHRG
CHRG Pin Input Current
BAT = 4.5V, VCHRG = 5V
0
1
µA
RON_CHG
Battery Charger Power FET
On-Resistance (Between VOUT and BAT)
IBAT = 200mA
0.18
Ω
TLIM
Junction Temperature in Constant
Temperature Mode
110
°C
The
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, RCLPROG = 2.94k, unless otherwise noted.
ELECTRICAL CHARACTERISTICS


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