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PT6644D Datasheet, PDF (1/6 Pages) Texas Instruments – 24W 12V Input Positive to Negative Voltage Converter | |||
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PT6640 Series
24W 12V Input Positive to Negative
Voltage Converter
SLTS037A
(Revised 6/30/2000)
⢠Wide Input Voltage Range:
+8V to +25V
⢠Negative Output:
â2.5V/4A to â15V/1.5A
⢠Adjustable Output Voltage
⢠85% Efficiency
⢠Remote Sense Capability
The PT6640 series is a positive
input to negative output line of
Integrated Switching Regulators
(ISRs). Designed for general purpose
applications, the PT6640 series deliv-
ers a negative output voltage at up
to 24W. The PT6640 is packaged in
a 14-Pin SIP (Single In-line Package)
and is available in a surface-mount
configuration.
Standard Application
VIN
4,5,6
PT6640
7,8,9,10
-VOUT
+
C1
11,12,13 1
C2
LOAD
COM
COM
REMOTE SENSE
C1 = Required 560µF electrolytic
C2 = Required 330µF electrolytic
Specifications
Characteristics
(Ta = 25°C unless noted)
Output Current
Symbols
Io
Input Voltage Range
Vin
Output Voltage Tolerance
Output Voltage Adjust Range
âVo
Voadj
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
with C2 = 330µF
Efficiency
Regline
Regload
Vn
ttr
Vos
η
Pin-Out Information
1 Remote Sense
2
Do Not Connect
3
Do Not Connect
4
+Vin
5
+Vin
6
+Vin
7
âVout
8
âVout
9
âVout
10
âVout
11 GND
12 GND
13 GND
14
Vout Adjust
Ordering Information
PT6641 = â3.3 Volts
PT6642 = â5.0 Volts
PT6643 = â12.0 Volts
PT6644 = â9.0 Volts
PT6645 = â15.0 Volts
PT6646 = â2.5 Volts
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Heat
Spreader
Vertical Through-Hole
P
Horizontal Through-Hole D
Horizontal Surface Mount E
Pkg Style 400
PT6640
Note: Back surface
of product is
conducting metal
Conditions
Ta = 60°C, 200 LFM, pkg P
Ta = 25°C, natural convection Vo⤠â 5.0V
Vo= â 9.0V
Vo= â 12.0V
Vo= â 15.0V
0.1A ⤠Io ⤠Io max
Vo = â2.5V/3.3V
Vo = â 5.0V
Vo = â 9.0V
Vo = â 12.0V
Vo = â 15.0V
Over Vin range
Ta = -40°C to +65°C
Pin 14 to Vo or ground
Vo = â 2.5V
Vo = â 3.3V
Vo = â 5.0V
Vo = â 9.0V
Vo = â12.0V
Vo = â15.0V
+9Vâ¤Vinâ¤+Vinmax, Io = Iomax
Vin = +12V, 0.1⤠Ioâ¤Iomax
Vin = +12V, Io = Iomax
Io step between 0.5xIomax and Iomax
Vo over/undershoot
Vin = +12V, Io = 0.5x Iomax Vo = â 2.5V
Vo = â 3.3V
Vo = â 5.0V
Vo = â9.0/12.0V
Vo = â15.0V
Vin = +12V, Io = Iomax
Vo = â 2.5V
Vo = â 3.3V
Vo = â 5.0V
Vo = â9.0/12.0/15.0V
PT6640 SERIES
Min
Typ
Max
Units
0.1
â
(See Note 2)
0.1
â
4.0
0.1
â
0.1
â
2.5
2.0
A
0.1
â
1.5
+8
â
+27
+8
â
+25
+8
â
+21
V
+8
â
+18
+8
â
+15
Vo-0.1 â
Vo+0.1 V
â1.8
â
â2.2
â
â3.0
â
â6.0
â
â9.0
â
â10.0
â
â
±0.5
â
±0.5
â
3.0
â
200
â
100
â
75
â
79
â
83
â
85
â
84
â
74
â
77
â
80
â
84
â4.3
â4.7
â6.5
â10.2
V
â13.6
â17.0
±1.0
%Vo
±1.0
%Vo
â
%Vo
â
µSec
â
mV
â
â
â
%
â
â
â
â
â
%
â
Continued
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
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