For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Standard Application
C1 = Required 100F electrolytic
C2 = Required 100F electrolytic
Ordering Information
PT6424
= +1.5 Volts
PT6425
= +3.3 Volts
PT6426
= +1.8 Volts
PT6427
= +2.1 Volts
PT6428
= +1.2 Volts
PT6429
= +2.5 Volts
Pin-Out Information
Pin
Function
1
Remote Sense
2
Do not connect
3
Do not connect
4V
in
5V
in
6V
in
7
GND
8
GND
9
GND
10
GND
11
Vout
12
Vout
13
Vout
14Vout Adjust
Adjustable Output Voltage
85% Efficiency
Small SIP Footprint
Input Voltage Range: 4.5V to 5.5V
Remote Sense Capability
The PT6420 series from Power
Trends is a high performance +5V to
+3.3V, 3Amp family of 14-Pin SIP
(Single In-line Package) Integrated
Switching Regulators (ISRs). Only
two external capacitors are required
for proper operation.
Please note that this product does
not include short circuit protection.
3 Amp 5V Input Adjustable
Integrated Switching Regulator
PT6420 Series
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
P
Horizontal Through-Hole D
Horizontal Surface Mount
E
PT6420
POWER TRENDS
Note: Back surface
of product is
conducting metal.
PT6420
C2
100F
+
COM
V
OUT
4,5,6
7,8,9,10
11,12,13
14
C1
100F
+
V
IN
COM
R1
(V
OUP)
R2
(V
ODOWN)
Remote
Sense
1
Pkg Style 310
Specifications
Characteristics
PT6420 SERIES
(T
a = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
4.5V
≤ Vin ≤ 5.5V
0
—
3.0
A
Current Limit
Icl
Vin = +5V
—
3.6
5.0
A
Input Voltage Range
Vin
0.1A
≤ Io ≤ 3.0A
4.5
—
5.5
V
Output Voltage Tolerance
Vo
Vin = +5V, Io = 3.0A
Vo-0.05
3.3
Vo+0.05
V
0°C
≤ Ta ≤ +70°C
Line Regulation
Regline
4.5V
≤ Vin ≤ 5.5V, Io = 3.0A
—
±10
±25
mV
Load Regulation
Regload
Vin = +5V, 0.3
≤ Io ≤ 3.0A
—
±10*
±25*
mV
Vo Ripple/Noise
Vn
Vin = 5V, Io = 3.0A
—
66
165
mVpp
Transient Response
ttr
Io step between 1.5A and 3.0A
—
200
—
Sec
with C2 = 100F
Vos
Vo over/undershoot
—
200
—
mV
Efficiency
η
Vin = +5V, Io = 1.5A
Vo= 3.3V
—
85
—
%
Vo= 1.8V
—
74—
%
Vo= 2.1V
—
77
—
%
Vo= 1.2V
—
63
—
%
Switching Frequency
o
4.5V
≤ Vin ≤ 5.5V
500
650
800
kHz
0.3A
≤ Io ≤ 3.0A
Absolute Maximum
Ta
0—
+85
°C
Operating Temperature Range
Recommended Operating
Ta
Free Air Convection (40-60 LFM)
0
—
+70**
°C
Temperature Range
At Vin= 5V, Io=2.5A
Thermal Resistance
θja
Free Air Convection (40-60 LFM)
—
25
—
°C/W
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3 , 1 msec,
—
500
—
G’s
Half Sine, mounted to a fixture
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
15
—
G’s
Weight
—
6.5
—
grams
*When used with remote sense function.
**See Thermal Derating chart.
Note: The PT6420 Series requires two 100F electrolytic or tantalum capacitors for proper operation in all applications.
SLTS033A
(Revised 6/30/2000)