参数资料
型号: LT1614CS8#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG INV ADJ 0.5A 8SOIC
标准包装: 2,500
类型: 反相
输出类型: 可调式
输出数: 1
输出电压: 可调至 -24V
输入电压: 0.92 V ~ 5 V
PWM 型: 电流模式
频率 - 开关: 600kHz
电流 - 输出: 500mA
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
LT1614
ELECTRICAL C HARA C TERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. Commercial Grade 0 ° C to 70 ° C. V IN = 1.5V, V SHDN = V IN unless
otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch V CESAT
Shutdown Pin Current
LBI Threshold Voltage
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 5)
Low-Battery Detector Gain
Switch Leakage Current
I SW = 500mA (25 ° C, 0 ° C)
I SW = 500mA (70 ° C)
V SHDN = V IN
V SHDN = 0V
I SINK = 10 μ A
V LBI = 250mV, V LBO = 5V
V LBI = 150mV
1M ? Load
V SW = 5V
q
190
185
295
10
–5
200
0.1
0.01
10
1000
0.01
350
400
20
– 10
210
215
0.25
0.1
50
3
mV
mV
μ A
μ A
mV
mV
V
μ A
nA
V/V
μ A
Industrial Grade – 40 ° C to 85 ° C. V IN = 1.5V, V SHDN = V IN unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Quiescent Current
V SHDN = 0V
1
5
2
10
mA
μ A
Feedback Voltage
q
– 1.21
– 1.24
– 1.27
V
NFB Pin Bias Current (Note 3)
Reference Line Regulation
Minimum Input Voltage
V NFB = – 1.24V
1V ≤ V IN ≤ 2V
2V ≤ V IN ≤ 6V
– 40 ° C
85 ° C
q
–2
– 4.5
0.6
0.3
1.1
0.8
– 7.5
1.1
0.8
1.25
1.0
μ A
%/V
%/V
V
V
Maximum Input Voltage
Error Amp Transconductance
Error Amp Voltage Gain
? I = 5 μ A
q
16
100
6
V
μ mhos
V/V
Switching Frequency
Maximum Duty Cycle
Switch Current Limit (Note 4)
Switch V CESAT
Shutdown Pin Current
LBI Threshold Voltage
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 5)
Low-Battery Detector Gain
Switch Leakage Current
I SW = 500mA (– 40 ° C)
I SW = 500mA (85 ° C)
V SHDN = V IN
V SHDN = 0V
I SINK = 10 μ A
V LBI = 250mV, V LBO = 5V
V LBI = 150mV
1M ? Load
V SW = 5V
q
q
q
500
70
0.75
180
600
80
1.2
250
330
10
–5
200
0.1
0.1
5
1000
0.01
750
350
400
20
– 10
220
0.25
0.3
30
3
kHz
%
A
mV
mV
μ A
μ A
mV
V
μ A
nA
V/V
μ A
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1614C is guaranteed to meet specified performance from
0 ° C to 70 ° C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40 ° C and 85 ° C. The
Note 3: Bias current flows out of NFB pin.
Note 4: Switch current limit guaranteed by design and/or correlation to
static tests. Duty cycle affects current limit due to ramp generator.
Note 5: Bias current flows out of LBI pin.
LT1614I is guaranteed to meet the extended temperature limits.
3
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