參數(shù)資料
型號(hào): LTC3412
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger
中文描述: 雙DC / DC轉(zhuǎn)換器的USB電源管理器和鋰離子電池充電器
文件頁(yè)數(shù): 6/24頁(yè)
文件大?。?/td> 516K
代理商: LTC3412
LTC3455
6
3455f
TYPICAL PERFOR AU
Battery Charger Regulation
Voltage
Battery Charger Recharge
Threshold
Battery Charger Trickle-Charge
Threshold
Charge Current When
Wall-Powered
Charge Current When
USB-Powered
PROG Pin Voltage
vs Charge Current
R
DS(ON)
for Switching Regulator
Power Switches
R
DS(ON)
for V
MAX
, USB, and HSO
PMOS Switches
TEMPERATURE (
°
C)
–50
B
μ
A
15.0
10.0
5.0
12.5
7.5
2.5
0
25
75
3455 G18
–25
0
50
100
125
V
= 4.2V
CHARGER OFF
TEMPERATURE (
°
C)
–50
R
D
1.4
1.2
1.0
0.8
0.6
0.2
0.4
0
25
75
3455 G21
–25
0
50
100
125
HSO
USB
V
MAX
V
HSI
= 3.3V
V
USB
= 5V
V
BAT
= 3.6V
TEMPERATURE (
°
C)
–50
R
D
0.7
0.6
0.5
0.4
0.3
0.1
0.2
0
25
75
3455 G20
–25
0
50
100
125
NMOS
PMOS
V
BAT
= 3.6V
TEMPERATURE (
°
C)
–50
V
B
4.30
4.25
4.20
4.15
4.10
4.05
4.00
25
75
3455 G13
–25
0
50
100
125
TEMPERATURE (
°
C)
–50
V
R
4.30
4.25
4.20
4.15
4.10
4.05
4.00
25
75
3455 G14
–25
0
50
100
125
TEMPERATURE (
°
C)
–50
T
3.0
2.9
2.8
2.7
2.6
2.5
25
75
3455 G15
–25
0
50
100
125
FALLING
RISING
TEMPERATURE (
°
C)
–50
B
600
500
400
300
200
100
0
25
75
3455 G16
–25
0
50
100
125
V
BAT
= 3.6V
V
MAX
= 4.5V
R
PROG
= 2.49k
THERMAL CONTROL
LOOP IN OPERATION
TEMPERATURE (
°
C)
–50
B
600
500
400
300
200
100
0
25
75
3455 G17
–25
0
50
100
125
V
BAT
= 3.6V
V
USB
= 5V
R
PROG
= 2.49k
V
USBHP
= 2V
V
USBHP
= 0V
THERMAL CONTROL
LOOP IN OPERATION
CHARGE CURRENT (mA)
0
V
P
1.50
1.25
1.00
0.75
0.50
0.25
0
300
3455 G19
100
200
400
500
V
BAT
= 3.6V
V
MAX
= 4.5V
R
PROG
= 2.49
T
A
°
C
Battery Current When
USB- or Wall-Powered
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