TI PT6312

For assistance or to order, call
(800) 531-5782
PT6310
Series
SLTS076
2 AMP ADJUSTABLE POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
•
•
•
•
•
•
•
87% Efficiency
Adjustable Output Voltage
Internal Short Circuit Protection
Over-Temperature Protection
On/Off Control (Ground Off)
Small SIP Footprint
Wide Input Range
The PT6310 series is a HighPerformance 2 Amp, 12-Pin SIP
(Single In-line Package) Integrated
Pin-Out Information
Pin
Inhibit
1
Standard Application
VOADJ
12
VIN
2,3,4
PT6300
VOUT
9,10,11
1
5,6,7,8
C1
INH
C2
+
Q1
COM
COM
C1 = Optional 1µF ceramic
C2 = Required 100µF electrolytic
Q1 = NFET
Specifications
Function
(30V max)
2
3
Vin
Vin
4
5
Vin
GND
6
7
GND
GND
8
9
GND
Vout
10
11
Vout
Vout
12
Vout Adj
(Revised 8/17/99)
Switching Regulator (ISR) designed to
meet the on-board power conversion
needs of battery powered or other equipment requiring high efficiency and
small size. This high performance ISR
offers a unique combination of features
combining 87% typical efficiency with
open-collector on/off control and adjustable output voltage.
Quiescent current in the shutdown
mode is typically less than 100µA.
Ordering Information
PT Series Suffix (PT1234X)
PT6310!
PT6311!
PT6312!
PT6313!
Case/Pin
Configuration
= +14.6 Volts
= +15.5 Volts
= +15.0 Volts
= +8.0 Volts
N
A
C
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
Pkg Style 200
PT6310 Series
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Short Circuit Current
Io
Isc
Over Vin range
Vin = Vo + 5V
0.1*
—
—
5.0
2.0
—
A
Apk
Input Voltage Range
Output Voltage Tolerance
Vin
∆Vo
0.1 ≤ Io ≤ 2.0 A
Over Vin Range, Io = 2.0 A
Ta = 0°C to +60°C
Vo + 4
—
38**
V
—
±1.0
±2.0
%Vo
Line Regulation
Regline
Over Vin range
—
±0.25
±0.5
%Vo
Load Regulation
Vo Ripple/Noise
Regload
Vn
0.1 ≤ Io ≤ 2.0 A
Vin = Vin min, Io = 2.0A
—
—
±0.25
±2
±0.5
—
%Vo
%Vo
Transient Response
with Co = 100µF
ttr
Vos
50% load change
Vo over/undershoot
—
—
100
5.0
200
—
µSec
%Vo
Efficiency
Switching Frequency
η
ƒo
Vin=24V, Io = 2.0 A
Over Vin and Io ranges
—
600
500
87
700
550
—
800
600
%
kHz
kHz
Shutdown Current
Quiescent Current
Isc
Inl
Vin = 15V
Io = 0A, Vin =10V
—
—
100
10
—
—
µA
mA
Output Voltage
Adjustment Range
Vo
Below Vo
Above Vo
See Application Notes.
Absolute Maximum
Operating Temperature Range
Ta
+85
°C
Recommendated Operating
Temperature Range
Ta
Free Air Convection, (40-60LFM)
At Vin = 18V, Io = 2.0A
-40
—
+70
°C
Thermal Resistance
θja
Free Air Convection (40-60LFM)
—
30
—
°C/W
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3, 1 msec,
Half Sine, mounted to a fixture
—
500
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz,Soldered in a PC board
—
10
—
G’s
—
—
6.5
—
grams
Weight
—
PT6312 only
-40
—
* ISR will operate to no load with reduced specifications.
** Input voltage cannot exceed 30V when the inhibit function is used.
Note: The PT6310 requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright  2000, Texas Instruments Incorporated