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LM2737 bảng dữ liệu(PDF) 3 Page - Texas Instruments

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tên linh kiện LM2737
Giải thích chi tiết về linh kiện  LM2727/LM2737 N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages
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LM2737 bảng dữ liệu(HTML) 3 Page - Texas Instruments

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LM2727, LM2737
www.ti.com
SNVS205D – AUGUST 2002 – REVISED MARCH 2013
Absolute Maximum Ratings
(1) (2)
VCC
7V
BOOTV
21V
Junction Temperature
150°C
Storage Temperature
−65°C to 150°C
Soldering Information
Lead Temperature (soldering, 10sec)
260°C
Infrared or Convection (20sec)
235°C
ESD Rating(3)
2 kV
(1)
Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for
which the device operates correctly. Opearting Ratings do not imply ensured performance limits.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3)
The human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin.
Operating Ratings
Supply Voltage (VCC)
4.5V to 5.5V
Junction Temperature Range
−40°C to +125°C
Thermal Resistance (
θJA)
155°C/W
Electrical Characteristics
VCC = 5V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA=TJ=+25°C. Limits appearing in
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are ensured by design,
test, or statistical analysis.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VCC = 4.5V, 0°C to +125°C
0.591
0.6
0.609
VCC = 5V, 0°C to +125°C
0.591
0.6
0.609
VCC = 5.5V, 0°C to +125°C
0.591
0.6
0.609
VFB_ADJ
FB Pin Voltage
V
VCC = 4.5V, −40°C to +125°C
0.589
0.6
0.609
VCC = 5V, −40°C to +125°C
0.589
0.6
0.609
VCC = 5.5V, −40°C to +125°C
0.589
0.6
0.609
VON
UVLO Thresholds
Rising
4.2
V
Falling
3.6
SD = 5V, FB = 0.55V
1
1.5
2
Fsw = 600kHz
Operating VCC Current
mA
IQ-V5
SD = 5V, FB = 0.65V
0.8
1.7
2.2
Fsw = 600kHz
Shutdown VCC Current
SD = 0V
0.15
0.4
0.7
mA
tPWGD1
PWGD Pin Response Time
FB Voltage Going Up
6
µs
tPWGD2
PWGD Pin Response Time
FB Voltage Going Down
6
µs
ISD
SD Pin Internal Pull-up Current
20
µA
ISS-ON
SS Pin Source Current
SS Voltage = 2.5V
0°C to +125°C
8
11
15
µA
-40°C to +125°C
5
11
15
ISS-OC
SS Pin Sink Current During Over
SS Voltage = 2.5V
95
µA
Current
ISEN Pin Source Current Trip Point
0°C to +125°C
35
50
65
ISEN-TH
µA
-40°C to +125°C
28
50
65
Copyright © 2002–2013, Texas Instruments Incorporated
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