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LT1500CS-5 数据表(PDF) 3 Page - Linear Technology

部件名 LT1500CS-5
功能描述  Adaptive-Frequency Current Mode Switching Regulators
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT1500CS-5 数据表(HTML) 3 Page - Linear Technology

  LT1500CS-5 Datasheet HTML 1Page - Linear Technology LT1500CS-5 Datasheet HTML 2Page - Linear Technology LT1500CS-5 Datasheet HTML 3Page - Linear Technology LT1500CS-5 Datasheet HTML 4Page - Linear Technology LT1500CS-5 Datasheet HTML 5Page - Linear Technology LT1500CS-5 Datasheet HTML 6Page - Linear Technology LT1500CS-5 Datasheet HTML 7Page - Linear Technology LT1500CS-5 Datasheet HTML 8Page - Linear Technology LT1500CS-5 Datasheet HTML 9Page - Linear Technology Next Button
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LT1500/LT1501
ELECTRICAL CHARACTERISTICS T
J = 25°C, VIN = 2.3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Internal Divider Current
LT1500-3.3/LT1501-3.3
q
22
30
µA
LT1500-5/LT1501-5
q
33
45
µA
Operating Quiescent Current
VIN ≤ 5V, VSHDN = 2.3V (Note 1)
q
200
280
µA
VIN = 15V
q
320
µA
Supply Current in Shutdown
VSHDN ≤ 0.2V, Fixed Voltages (Note 7)
TJ ≥ 0°C
q
815
µA
TJ < 0°C20
µA
Shutdown Pin Threshold
q
0.4
1.1
V
Shutdown Pin Input Current
VSHDN = 2.3V
q
310
µA
Input Start-Up Voltage
VSHDN = VIN
TJ ≥ 0°C
q
2.0
2.1
V
TJ < 0°C
2.2
V
Undervoltage Lockout
Light Load
1.8
V
Full Load
2.0
2.1
V
Power Switch
Switch On Resistance
ISW = 0.7A (Note 2)
q
0.50
0.72
Ω
Peak Switch Current (Note 3)
q
0.7
0.85
1.3
A
Switch Breakdown Voltage
ISW = 100µA
q
30
45
V
Switch Leakage Current
VSW = 5V
q
0.2
5
µA
VSW = 20V
q
0.3
10
µA
Switch Turn-On Delay (Note 5)
800
ns
Switch Turn-Off Delay (Note 5)
400
ns
Current Sense Resistor
q
0.28
0.42
Ω
Low-Battery Comparator
Low-Battery Threshold
Falling Edge
q
1.20
1.24
1.28
V
Threshold Hysteresis
20
mV
LBI Input Bias Current
q
20
50
nA
LBO Output Low State
VLBI = 1.2V, ISINK = 100µA
q
0.1
0.25
V
ISINK = 2mA
q
0.3
0.5
V
LBO Leakage Current
VLBI = 1.3V, VLBO ≤ 15V
q
2
µA
LT1500 Functions
SYNC Pin Bias Current
VSYNC = 3.3V
q
15
35
µA
SYNC Pin Threshold
q
0.4
1.3
V
Error Amplifier Transconductance
600
µmho
VC Pin Source Current
20
µA
VC Pin High Clamp Voltage
1.20
1.26
1.32
V
NFB Reference Voltage
FB Pin Open
q
1.230
1.265
1.300
V
NFB Pin Bias Current
q
12
20
µA
NFB to FB Transconductance
Note 4
10,000
µmho
Soft Start Bias Current
Current Flows Out of Pin
q
247
µA



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