LTC4088 LINER [Linear Technology], LTC4088 Datasheet - Page 3

• Manufacturer Part Number: LTC4088
• Description: High Effi ciency Battery Charger/USB Power Manager
• Manufacturer: LINER [Linear Technology]

SYMBOL
V
V
V
f
R
R
I
R
Battery Charger
V
I
I
V
V
h
V
ΔV
V
t
t
I
V
h
V
I
R
T
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
OSC
PEAK
CHG
BAT
TERM
BADBAT
C/X
CHRG
PROG
C/X
LIM
UVLO
DUVLO
OUT
FLOAT
PROG
PROG,TRKL
TRKL
RECHRG
C/X
CHRG
PMOS
NMOS
SUSP
ON_CHG
TRKL
PARAMETER
V
V
Lockout
V
Switching Frequency
PMOS On Resistance
NMOS On Resistance
Peak Inductor Current Clamp
Suspend LDO Output Resistance
BAT Regulated Output Voltage
Constant-Current Mode Charge Current
Battery Drain Current
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle
Charge
Ratio of I
Trickle Charge Threshold Voltage
Trickle Charge Hystersis Voltage
Recharge Battery Threshold Voltage
Safety Timer Termination Period
Bad Battery Termination Time
Battery Charge Current at Programmed
End of Charge Indication
C/X Threshold Voltage
Battery Charge Current Ratio to C/X
CHRG Pin Output Low Voltage
CHRG Pin Input Current
Battery Charger Power FET
On-Resistance (Between V
Junction Temperature in Constant
Temperature Mode
BUS
BUS
OUT
Undervoltage Lockout
to BAT Differential Undervoltage
Voltage
BAT
to PROG Pin Current
OUT
and BAT)
A
CONDITIONS
Rising Threshold
Falling Threshold
Rising Threshold
Falling Threshold
1x, 5x, 10x Modes, 0V < BAT ≤ 4.2V,
I
USB Suspend Modes, I
1x, 5x Modes
10x Mode
0°C ≤ T
R
R
V
Regulator On, Battery Charger Off,
I
V
BAT < V
BAT Rising
Threshold Voltage Relative to V
Timer Starts when V
BAT < V
R
R
I
BAT = 4.5V, V
I
= 25°C. V
OUT
OUT
CHRG
BAT
PROG
PROG
BUS
BUS
C/X
C/X
= 200mA
= 0mA, Battery Charger Off
= 0µA
= 1k
= 5k
> V
= 0V, I
The
= 5mA
= 1k
= 5k
A
TRKL
TRKL
UVLO
≤ 85°C
●
BUS
OUT
, PowerPath Switching
denotes the specifi cations which apply over the full operating
CHRG
= 0µA (Ideal Diode Mode)
= 5V, BAT = 3.8V, R
= 5V
BAT
OUT
= V
= 250µA
FLOAT
FLOAT
CLPROG
= 2.94k, unless otherwise noted.
4.179
4.165
MIN
3.95
980
192
–80
3.5
4.5
1.8
2.7
3.2
0.4
85
BAT + 0.3
4.200
4.200
1.000
0.100
1030
1031
–100
1031
4.30
4.00
2.25
0.18
0.30
2.85
0.18
TYP
200
206
135
100
100
110
4.6
3.5
4.0
0.5
50
15
23
20
65
2
3
0
LTC4088
4.221
4.235
1080
–120
MAX
4.35
220
115
100
4.7
4.7
2.7
3.0
4.8
0.6
35
5
1
mA/mA
mA/mA
UNITS
Hour
Hour
3
MHz
4088f
mV
mV
mA
mA
mV
mV
mA
mA
mV
mV
µA
µA
µA
°C
Ω
Ω
Ω
Ω
V
V
V
V
A
A
V
V
V
V
V