LTC4088-1_12 LINER [Linear Technology], LTC4088-1_12 Datasheet - Page 5

• Manufacturer Part Number: LTC4088-1_12
• Description: High Efficiency Battery Charger/USB Power Manager
• Manufacturer: LINER [Linear Technology]

Typical perForMance characTerisTics
100
700
600
500
400
300
200
100
1.0
0.8
0.2
0.6
0.4
90
80
60
40
70
50
0
0
0.01
2.7
0
Ideal Diode V-I Characteristics
USB Limited Battery Charge
Current vs Battery Voltage
PowerPath Switching Regulator
Efficiency vs Output Current
5x USB SETTING,
BATTERY CHARGER SET FOR 1A
V
BAT
= 3.8V
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
0.04
3.0
FORWARD VOLTAGE (V)
1x MODE
OUTPUT CURRENT (A)
BATTERY VOLTAGE (V)
V
R
R
BUS
PROG
CLPROG
0.08
3.3
= 5V
0.1
= 1k
= 2.94k
0.12
INTERNAL IDEAL
DIODE ONLY
3.6
5x, 10x MODE
0.16
V
V
3.9
BUS
BUS
408812 G04
408812 G07
408812 G01
= 0V
= 5V
0.20
4.2
1
0.25
0.20
0.10
0.05
0.15
150
125
100
75
50
25
82
90
88
86
84
80
0
0
2.7
2.7
2.7
Ideal Diode Resistance
vs Battery Voltage
USB Limited Battery Charge
Current vs Battery Voltage
Battery Charging Efficiency vs
Battery Voltage with No External
Load (P
1x USB SETTING,
BATTERY CHARGER SET FOR 1A
R
R
I
OUT
CLPROG
PROG
INTERNAL IDEAL
= 0mA
5x CHARGING
3.0
3.0
3.0
= 1k
EFFICIENCY
BAT
= 2.94k
INTERNAL IDEAL DIODE
DIODE
WITH SUPPLEMENTAL
BATTERY VOLTAGE (V)
BATTERY VOLTAGE (V)
BATTERY VOLTAGE (V)
EXTERNAL VISHAY
V
R
R
/P
BUS
PROG
CLPROG
Si2333 PMOS
3.3
3.3
BUS
3.3
= 5V
1x CHARGING
= 1k
EFFICIENCY
)
= 2.94k
3.6
3.6
3.6
3.9
3.9
3.9
408812 G05
408812 G02
408812 G08
T
LTC4088-1/LTC4088-2
A
= 25°C, unless otherwise noted.
4.2
4.2
4.2
4.50
4.25
3.75
3.50
3.25
4.00
25
20
10
50
40
30
20
10
15
5
0
0
2.7
0
1
Output Voltage vs Output Current
(Battery Charger Disabled)
Battery Drain Current
vs Battery Voltage
V
(Suspend)
I
I
OUT
OUT
BUS
V
V
BAT
BAT
= 0µA
= 0mA
200
Current vs V
3.0
= 3.4V
2
= 4V
OUTPUT CURRENT (mA)
BATTERY VOLTAGE (V)
(SUSPEND MODE)
V
BUS
400
3.3
3
V
BUS
VOLTAGE (V)
BUS
= 5V
600
3.6
4
Voltage
V
BUS
V
5x MODE
800
= 0V
3.9
BUS
5
408812 G03
408812 G06
408812 G09
= 5V
40881fc
5
1000
4.2
6