PT7615 Datasheet, PDF (1/7 Pages) Texas Instruments – 20-A Low-Voltage Programmable Integrated Switching Regulator

PT7615—5V
20-A Low-Voltage Programmable
Integrated Switching Regulator
SLTS163
(Revised 12/13/2001)
Features
• Single-Device: +5V Input
• 20A Output
• 5-bit Programmable:
1.075V to 1.85V (25mV Steps)
• VRM 9.0 Compatible
• High Efficiency (87%)
• Differential Remote Sense
• Short-Circuit Protection
• Compatible with PT7743
20A “Current Booster”
Description
The PT7615 power module is a 20-A
fully integrated switching regulator (ISR)
housed in a 27-pin aluminum SIP package.
Operating from a 5V-input bus, the
PT7615 produces a tightly regulated
supply voltage that is programmable over
the range, 1.075V to 1.85V. The output
voltage is selected via a 5-bit code. The
code adjusts the voltage in steps of 25mV
and is VRM 9.0 compatible.
This regulator is most suitable for
applications that employ microprocessor
and DSP products that require core supply
voltages as low as 1.075V.
The PT7615 includes a Shutdown
control, Differential Remote Sense, and
Short-Circuit Protection.
Ordering Information
PT7615o = 1.075 to 1.85Volts
PT7743o = 20A Booster
PT Series Suffix (PT1234 x )
Case/Pin
Configuration
Order
Suffix
Package
Code
Vertical
Horizontal
SMD
N
(EHD)
A
(EHA)
C
(EHC)
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
Pin-Out Information
Pin Function
1 VID0
2 VID1
3 VID2
4 VID3
5 STBY *
6 VID4
7 Vin
8 Vin
9 Vin
10 Vin
11 Vin
12 Remote Sense (–)
13 GND
14 GND
Pin Function
15 GND
16 GND
17 GND
18 GND
19 GND
20 Vout
21 Vout
22 Vout
23 Vout
24 Vout
25 Vout
26 Remote Sense (+)
27 Sync Out
For STBY* pin: open =output enabled
ground =output disabled.
Standard Application
VID0
VID1
VID2
VID3
VID4
V_IN
PROGRAMMING PINS
L1
1µH
64321
REMOTE SENSE(+)
26
7-11
PT7615
20-25
V_OUT
SYNC OUT
GND
+
C _IN
27 5 13-19 12
+
C_OUT
L
O
A
D
GND
STBY*
REMOTE SENSE(–)
Cin = Required 1500µF electrolytic
Cout = Required 330µF electrolytic
L1 = Optional 1µH input choke
For technical support and more information, see inside back cover or visit www.ti.com