For assistance or to order, call (800) 531-5782
SLTS124
(Revised 1/21/2000)
P T 6 6 1 0 S e r i e s
9 AMP 5V STEP-DOWN INTEGRATED
SWITCHING REGULATOR
•
•
•
•
•
•
•
Single Device 9A Output
(Single In-line Package) Integrated
Input Voltage Range: 4.5V to 6.0V
Adjustable Output Voltage
90% Efficiency
Remote Sense Capability
Standby Function
Switching Regulators (ISRs), designed
for stand alone operation in applica-
tions requiring as much as 9A of
output current.
Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.
Over-Temperature Protection
The PT6610 series is a high per-
formance +5V family of 14-Pin SIP
Pin-Out Information Ordering Information PT Series Suffix
(PT1234X)
PT6611
!
= +3.3 Volts
= +2.5 Volts
Case/Pin
Configuration
Heat
Heat Spreader
Pin
1
Function
Remote Sense
Do not connect
STBY*-Standby
Vin
Spreader with Side Tabs
PT6613
!
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
P
D
E
R
G
B
2
3
4
Standard Application
5
6
Vin
Vin
VoADJ
V
oSENSE
7
8
9
14
1
GND
GND
GND
GND
Vout
Vout
Vout
VIN
VOUT
4,5,6
11,12,13
PT6610
+
+
3
7,8,9,10
10
CIN
COUT
LOAD
Pkg Style 400
STBY
COM
11
12
13
14
Q1
Note: Back surface
of product is
conducting metal.
COM
PT6610
Vout Adjust
C1 = Required 330µF electrolytic (1)
C2 = Required 330µF electrolytic (1)
Q1= NFET-or Open Collector Gate
Specifications
PT6610 SERIES
Characteristics
(Ta = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = 60°C, 200 LFM, pkg P
Ta = 25°C, natural convection
0.1 (2)
—
—
9.0
7.0
A
A
(2)
0.1
Input Voltage Range
Vin
∆Vo
Voadj
0.1A ≤ Io ≤ 9.0A
Vo= +2.5/3.3V 4.5
—
6.0
Output Voltage Tolerance
Output Voltage Adjust Range
Vin = +5V, Io = 9.0A
Ta = 0°C to 65°C
Vo-0.1
—
Vo+0.1
V
Pin 14 to Vo or ground
Vo= +3.3V 2.25
Vo= +2.5V 1.80
—
—
4.20
3.50
V
inmin=+4.5V or Vo+1.2V
V
(whichever is greater)
Line Regulation
Load Regulation
Vo Ripple/Noise
Regline
Regload
Vn
4.5V ≤ Vin ≤ 6.0V, Io = 9.0A
4.5V ≤ Vin ≤ 6.0V, Io = 9.0A
Vo= +3.3V
Vo= +2.5V
—
—
7
7
17
13
mV
Vin = +5V, 0.1 ≤ Io ≤ 9.0A
Vo= +3.3V
Vo= +2.5V
—
—
17
13
33
25
mV
Vin = 5V, Io = 9.0A
—
50
—
mVpp
Transient Response
with C2 = 330µF
ttr
Io step between 4.0A and 9.0A
Vo over/undershoot
—
—
100
150
—
—
µSec
mV
Vos
Efficiency
η
Vin = +5V, Io = 3.0A
Vo = +3.3V
Vo = +2.5V
—
—
90
88
—
—
%
Vin = +5V, Io = 9.0A
Vo = +3.3V
Vo = +2.5V
—
—
86
83
—
—
%
Switching Frequency
ƒo
4.5V ≤ Vin ≤ 6.0V
0.1A ≤ Io ≤ 9.0A
475
–40
600
—
725
kHz
Absolute Maximum
Operating Temperature Range
Ta
Free Air Convection (40-60 LFM)
Over Vin and Io ranges with heat tab
(3)
(4)
+85
°C
Thermal Resistance
Storage Temperature
θja
Ts
Free Air Convection (40-60 LFM)
—
—
25
—
—
°C/W
°C
-40
+125
Continued
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends