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A5973D013TR Datasheet

  • A5973D013TR

  • 2.5A switch step down switching regulator for automotive app...

  • 13頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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A5973D
2.5A switch step down switching regulator
for automotive applications
Features
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Qualified following the AEC-Q100
requirements (temperature Grade 3), see
PPAP for more details.
Temperature range -40
擄C
to 85
擄C
2A DC output current
Operating input voltage from 4V to 36V
3.3V / (鹵2%) reference voltage
Output voltage adjustable from 1.235V to 35V
Low dropout operation: 100% duty cycle
250kHz Internally fixed frequency
Voltage feedforward
Zero load current operation
Internal current limiting
Inhibit for zero current consumption
Synchronization
Protection against feedback disconnection
Thermal shutdown
HSOP8 exposed pad
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Description
The A5973D is a step down monolithic power
switching regulator with a minimum switch current
limit of 2.5A so it is able to deliver more than 2A
DC current to the load depending on the
application conditions. The output voltage can be
set from 1.235V to 35V. The high current level is
also achieved thanks to an SO8 package with
exposed frame, that allows to reduce the
R
th(JA)
down to approximately 40擄C/W. The
device uses an internal P-channel D-MOS
transistor (with a typical Rdson of 250m鈩? as
switching element to minimize the size of the
external components. An internal oscillator fixes
the switching frequency at 250kHz. Having a
minimum input voltage of 4V only, it is particularly
suitable for 5V bus. Pulse by pulse current limit
with the internal frequency modulation offers an
effective constant current short circuit protection.
Pulse by pulse current limit with the internal
frequency modulation offers an effective constant
current short circuit protection.
L1 15uH
Applications
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Dedicated to automotive applications
Figure 1.
Typical application
VCC
COMP
C4
VIN=4V to 35V
8
4
1
2
OUT
SYNCH
Vout=3.3V
A5973D
FB
6
5
7
GND
INH
3
D1
STPS340U
R1
5k6
C2
330uF
6.3V
R2
3k3
C1
10uF
35V
CERAMIC
C3
220pF
22nF
R3
4k7
VREF
3.3V
October 2007
Rev 2
1/14
www.st.com
1

A5973D013TR 產(chǎn)品屬性

  • A5973D View All Specifications

  • 1

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 降壓（降壓）

  • 可調(diào)式

  • 1

  • 1.235 V ~ 35 V

  • 4 V ~ 36 V

  • Burst Mode?

  • 250kHz

  • 2A

  • 無(wú)

  • -40°C ~ 125°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm Width）裸露焊盤

  • Digi-Reel®

  • 8-HSOP

  • 497-10187-6

A5973D013TR相關(guān)型號(hào)PDF文件下載

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