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| 型号： | LT1913IDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 3.5A 10DFN |
| 标准包装： | 121 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.79 V ~ 25 V |
| 输入电压： | 3.6 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 2.4MHz |
| 电流 - 输出： | 3.5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 10-DFN（3x3） |
LT1913
ELECTRICAL CHARACTERISTICS
The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 10V, V RUN/SS = 10V, V BOOST = 15V, V BD = 3.3V unless otherwise
noted. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Feedback Voltage
●
780
775
790
790
800
805
mV
mV
FB Pin Bias Current (Note 3)
FB Voltage Line Regulation
V FB = 0.8V, V C = 0.4V
4V < V IN < 25V
●
10
0.002
40
0.01
nA
%/V
Error Amp g m
Error Amp Gain
V C Source Current
V C Sink Current
V C Pin to Switch Current Gain
V C Clamp Voltage
525
2000
60
60
5.3
2.0
μMho
μA
μA
A/V
V
Switching Frequency
R T = 8.66k
2.2
2.45
2.7
MHz
Minimum Switch Off-Time
R T = 29.4k
R T = 187k
●
1.0
200
1.1
230
60
1.25
260
150
MHz
kHz
nS
Switch Current Limit
Switch V CESAT
Boost Schottky Reverse Leakage
Minimum Boost Voltage (Note 4)
BOOST Pin Current
RUN/SS Pin Current
Duty Cycle = 5%
I SW = 3.5A
V SW = 10V, V BD = 0V
I SW = 1A
V RUN/SS = 2.5V
●
4.6
5.4
335
0.02
1.5
35
5
6.0
2
2.0
60
8
A
mV
μA
V
mA
μA
RUN/SS Input Voltage High
RUN/SS Input Voltage Low
0.2
2.5
V
V
PG Threshold Offset from Feedback Voltage
PG Hysteresis
V FB Rising
65
10
mV
mV
PG Leakage
V PG = 5V
0.1
1
μA
PG Sink Current
V PG = 0.4V
●
200
800
μA
SYNC Low Threshold
SYNC High Threshold
0.5
0.8
V
V
SYNC Pin Bias Current
V SYNC = 0V
0.1
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
Note 3: Bias current ?ows out of the FB pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
reliability and lifetime.
Note 2: The LT1913E is guaranteed to meet performance speci?cations
from 0°C to 125°C. Speci?cations over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT1913I speci?cations are
guaranteed over the –40°C to 125°C temperature range.
1913f
3
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