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LM3153 データシート(PDF) 5 Page - Texas Instruments

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部品番号 LM3153
部品情報  SIMPLE SWITCHER짰 CONTROLLER, High Input Voltage Synchronous Step-Down
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM3153 データシート(HTML) 5 Page - Texas Instruments

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LM3151, LM3152, LM3153
www.ti.com
SNVS562G – SEPTEMBER 2008 – REVISED MARCH 2011
ELECTRICAL CHARACTERISTICS (continued)
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C
to +125°C. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical values represent
the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the
following conditions apply: VIN = 18V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Soft-Start
ISS
SS Pin Source Current
VSS = 0V
5.9
7.7
9.5
mA
ISS-DIS
SS Pin Discharge Current
200
µA
Current Limit
VCL
Current Limit Voltage Threshold
175
200
225
mV
ON/OFF Timer
tON-MIN
ON Timer Minimum Pulse Width
200
ns
tOFF
OFF Timer Minimum Pulse Width
370
525
ns
Enable Input
VEN
EN Pin Input Threshold Trip Point
VEN Rising
1.14
1.20
1.26
V
VEN-HYS
EN Pin threshold Hysteresis
VEN Falling
120
mV
Boost Diode
IBST = 2 mA
0.7
V
Vf
Forward Voltage
IBST = 30 mA
1
V
Thermal Characteristics
Thermal Shutdown
Rising
165
°C
TSD
Thermal Shutdown Hysteresis
Falling
15
°C
4 Layer JEDEC Printed Circuit
40
Board, 9 Vias, No Air Flow
θJA
Junction to Ambient
°C/W
2 Layer JEDEC Printed Circuit
140
Board. No Air Flow
θJC
Junction to Case
No Air Flow
4
°C/W
ELECTRICAL CHARACTERISTICS 3.3V OUTPUT OPTION
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VOUT
Output Voltage
3.234
3.3
3.366
V
VOUT-OV
Output Voltage Over-Voltage Threshold
3.83
4.00
4.17
V
LM3151-3.3
42
VIN-MAX
Maximum Input Voltage (1)
LM3152-3.3
33
V
LM3153-3.3
18
LM3151-3.3
6
VIN-MIN
Minimum Input Voltage (1)
LM3152-3.3
6
V
LM3153-3.3
8
LM3151-3.3, RON = 115 kΩ
250
fS
Switching Frequency
LM3152-3.3, RON = 51 kΩ
500
kHz
LM3153-3.3, RON = 32 kΩ
750
LM3151-3.3, RON = 115 kΩ
730
tON
On-Time
LM3152-3.3, RON = 51 kΩ
400
ns
LM3153-3.3, RON = 32 kΩ
330
RFB
FB Resistance to Ground
566
k
(1)
The input voltage range is dependent on minimum on-time, off-time, and therefore frequency, and is also affected by optimized
MOSFET selection.
Copyright © 2008–2011, Texas Instruments Incorporated
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Product Folder Links: LM3151 LM3152 LM3153


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