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參數(shù)資料
| 型號： | LTC3553EUD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件頁數(shù)： | 32/36頁 |
| 文件大?。?/td> | 518K |
| 代理商： | LTC3553EUD#PBF |
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LTC3553
5
3553fa
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VINLDO
Input Voltage Range
(Note 9)
l
1.65
5.5
V
VOUT UVLO VOUT Undervoltage Lockout
VOUT Falling
VOUT Rising
2.5
2.6
2.8
2.9
V
VLDO_FB
Regulated Feedback Voltage
ILDO = 1mA, STBY High or Low (Note 10)
l
780
800
820
mV
VLDO_FB Line Regulation
ILDO = 1mA, VINLDO = 1.65V to 5.5V (Note 10)
0.7
mV/V
VLDO_FB Load Regulation
ILDO = 1mA to 150mA (Note 10)
0.025
mV/mA
ILDO_FB
Feedback Pin Input Current
–50
50
nA
ILDO_OC
Available Output Current
l
150
mA
ILDO_SC
Short-Circuit Output Current
(Note 7)
300
mA
VDROP
Dropout Voltage (Note 13)
ILDO = 150mA, VINLDO = 3.8V
ILDO = 150mA, VINLDO = 2.5V
ILDO = 75mA, VINLDO = 1.8V
160
220
180
260
350
280
mV
tLDO_SS
Soft-Start Time
0.2
ms
RLDO_PD
Output Pull-Down Resistance in Shutdown LDO_ON = 0V
10
kΩ
PUSHBUTTON INTERFACE ELECTRICAL CHARACTERISTICS
The
l denotes specications that apply over the full operating temperature range, otherwise specications are at TA = 25°C (Note 2).
VBAT = 3.8V, unless otherwise noted.
LDO REGULATOR ELECTRICAL CHARACTERISTICS
The
l denotes specications that apply over the full operating temperature range, otherwise specications are at TA = 25°C (Note 2).
LDO_ON = VOUT = VINLDO = 3.8V, STBY = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Pushbutton Pin (ON)
VCC_PB
Pushbutton Operating Supply Range
(Notes 4 , 9)
l
2.7
5.5
V
VON_TH
ON Threshold Rising
ON Threshold Falling
0.4
1.2
V
ION
ON Input Current
VON = VCC (Note 4)
–1
1
μA
RPB_PU
Pushbutton Pull-Up Resistance
Pull-Up to VCC (Note 4)
200
400
650
kΩ
Logic Input Pins (BUCK_ON, LDO_ON, SEQ)
Input High Voltage
Input Low Voltage
1.2
0.4
V
Input Current
–1
1
μA
Status Output Pin (PBSTAT)
IPBSTAT
PBSTAT Output High Leakage Current
VPBSTAT = 3V
–1
1
μA
VPBSTAT
PBSTAT Output Low Voltage
IPBSTAT = 3mA
0.1
0.4
V
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