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参数资料
| 型号： | LTC3553EUD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20 |
| 封装： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 31/36页 |
| 文件大小： | 518K |
| 代理商： | LTC3553EUD#PBF |
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LTC3553
4
3553fa
BUCK REGULATOR ELECTRICAL CHARACTERISTICS
The
l denotes specications that apply over the full operating temperature range, otherwise specications are at TA = 25°C (Note 2).
BUCK_ON = VOUT = BVIN = 3.8V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
BVIN
Input Supply Voltage
(Note 9)
l
2.7
5.5
V
VOUT UVLO VOUT Undervoltage Lockout
VOUT Falling
VOUT Rising
2.5
2.6
2.8
2.9
V
fOSC
Oscillator Frequency
0.955
1.125
1.295
MHz
IBUCK_FB
BUCK_FB Input Current (Note 8)
–0.05
0.05
μA
RSW_PD
SW Pull-Down in Shutdown
BUCK_ON = 0V
10
kΩ
Logic Input Pin (STBY)
Input High Voltage
1.2
V
Input Low Voltage
0.4
V
Input Current
–1
1
μA
Buck Regulator in Normal Operation (STBY Low)
ILIM
Peak PMOS Current Limit
BUCK_ON = 3.8V (Note 7)
300
500
650
mA
VBUCK_FB
Regulated Feedback Voltage
BUCK_ON = 3.8V
l
780
800
820
mV
DMAX
Max Duty Cycle
100
%
RP
RDS(ON) of PMOS
ISW = 100mA
1.1
Ω
RN
RDS(ON) of NMOS
ISW = –100mA
0.7
Ω
Buck Regulator in Standby Mode (STBY High)
Feedback Voltage Threshold
BUCK_ON = 3.8V, VBUCK_FB Falling
l
770
800
820
mV
Short-Circuit Current
30
50
100
mA
Standby Mode Dropout Voltage
BUCK_ON = 2.9V, ISW = 10mA, VBUCK_FB = 0.76V,
VOUT = 2.9V, BVIN = 2.9V
50
100
mV
POWER MANAGER ELECTRICAL CHARACTERISTICS
The
l denotes specications that apply over the full operating temperature range, otherwise specications are at TA = 25°C (Note 2),
VBUS = 5V, VBAT = 3.8V, HPWR = SUSP = BUCK_ON = LDO_ON = 0V, RPROG = 1.87k, STBY = high, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Ideal Diode
VFWD
Forward Voltage Detection
(Note 12)
15
mV
RDROPOUT
Diode On-Resistance, Dropout
IOUT = 200mA, VBUS = 0V
240
mΩ
IMAX
Diode Current Limit
(Note 7)
1
A
Logic Inputs (HPWR, SUSP)
VIL
Input Low Voltage
0.4
V
VIH
Input High Voltage
1.2
V
RPD
Internal Pull-Down Resistance
4MΩ
Logic Output (CHRG)
VOL
Output Low Voltage
ICHRG = 5mA
65
250
mV
ICHRG
Output Hi-Z Leakage Current
VBAT = 4.5V, VCHRG = 5V
0
1
μA
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相关代理商/技术参数 |
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| LTC3554 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators |
| LTC3554EPD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators |
| LTC3554EPD#PBF | 功能描述:IC USB POWER MANAGER 20-UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3554EPD#TRPBF | 功能描述:IC USB POWER MANAGER 20-UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
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