For assistance or to order, call (800) 531-5782
P T 6 3 0 5 S e r i e s
3 AMP HIGH-PERFORMANCE
ADJUSTABLE ISR
• Single-Device 5V to 3V Power
• 85% Efficiency
Amp, 12-Pin SIP (Single In-line-
Package) Integrated Switching
• Small SIP Footprint:
0.36" x 2.00” x 0.60"(H)
• Wide Input Voltage Range:
+4.5V to +9.0V
• Internal Short Circuit Protection
• Over-Temperature Protection
Regulator (ISR). This high-perfor-
mance ISR allows easy integration of
low-power 3.3V logic IC’s into existing
5V systems without redesigning the
central power supply. Only one external
capacitor is required for proper
operation. The PT6306,7,8 can be used
to power high-speed data buses (+2.1V),
or the new GTL (+1.2V) logic buses.
The PT6305N is Power Trends’
new high performance +5V to +3.3V, 3
Pin-Out Information
Ordering Information
PT6305■ = +3.3 Volts
PT6306■ = +1.8 Volts
PT6307■ = +2.1 Volts
Pin No. Function
Pin No. Function
1
2
3
4
5
6
N/C
7
GND
Standard Application
V
in
8
GND
VO Adjust
12
V
in
9
V
out
PT6308■ = +1.2 Volts
2,3,4
9,10,11
VIN
(+)
VOUT
(+)
V
in
10
11
12
V
out
(For dimensions, see page 66.)
PT6305,6,7,8
GND
GND
V
out
C1
Adjust
(See page 40.)
PT Series Suffix
C2
(PT1234X)
5,6,7,8
Case/Pin
Heat Tab Configuration
Configuration
None
Side
COM
COM
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
R
G
B
C1 = Optional electrolytic (100µF)
C2 = Required 100µF electrolytic (No tantalum)
See capacitor application note on page 43.
1
12
(See Thermal Application Notes on page 44 for heat tab
application data.)
Specifications
PT6305 SERIES
Characteristics
A
(T=25˚C unless noted)
Symbols
Io
Conditions
Min
0.3
—
Typ
—
Max
3.0**
5.0
Units
ADC
ADC
Apk
Output Current
4.5 ≤ Vin ≤ Vin MAX
Vin = +5V
Current Limit
Icl
3.6
5.0
Short Circuit Current
Input Voltage Range
Isc
Vin = +5V
—
—
Vin
0.3A ≤ Io ≤ 3.0A
PT6305N
PT6306N
PT6307N
PT6308N
4.5
4.5
4.5
4.5
—
—
—
—
9
VDC
VDC
VDC
VDC
9
9
6.0
Static Voltage Tolerance
Vo
Vin = +5V, Io = 3.0A PT6305N
3.2
1.7
2.0
1.1
3.3
1.8
2.1
1.2
3.4
1.9
2.2
1.3
VDC
VDC
VDC
VDC
0°C ≤ Ta ≤ +70°C
PT6306N
PT6307N
PT6308N
Line Regulation
Regline
Regload
Vn
4.5V ≤ Vin ≤ 5.5V, Io = 3.0A
Vin = +5V, 0.3 ≤ Io ≤ 3.0A
Vin = 5V, Io = 3.0A
—
—
—
±25
±25
66
±50
±50
—
mV
mV
mV
Load Regulation
Vo Ripple/Noise pk-pk
Transient Response
with C2 = 100µF
ttr
Io step between 1.5A and 3.0A
Vo over/undershoot
—
—
200
200
—
—
µSec
mV
Vos
Efficiency
η
Vin = +5V, Io = 1.5A PT6305N
PT6306N
—
—
—
—
85
74
77
63
—
—
—
—
%
%
%
%
PT6307N
PT6308N
Vin = +5V, Io = 3.0A PT6305N
PT6306N
—
—
—
—
80
68
72
57
—
—
—
—
%
%
%
%
PT6307N
PT6308N
Switching Frequency
ƒo
4.5 ≤ Vin ≤ Vin MAX
0.3A ≤ Io ≤ 3.0A
500
0
650
—
800
KHz
°C
Operating Temperature
Ta
Free Air Convection (40-60 LFM)
Over Vin and Io Ranges
+70*
Thermal Resistance
Storage Temperature
Mechanical Shock
θja
Ts
Free Air Convection (40-60 LFM)
—
—
25
—
—
°C/W
°C
-40
+125
Per Mil-STD-883D, Method 2002.3 Condition A, 1 msec, Half Sine,
mounted to a fixture
—
—
500
G’s
Mechanical Vibration
Weight
Per Mil-STD-883D, Method 2007.2 Condition A, 20-2000 Hz
—
—
0
—
15
—
95
G’s
—
—
—
11.2
—
grams
%
Relative Humidity
Non-condensing
*See Thermal Derating chart. **The PT6305 Series can be easily paralleled to provide output current in multiples of 3 amps. Please contact a Power Trends’ Application Engineer for the
appropriate application note. Note: The PT6305 Series requires a 100µF electrolytic capacitor for proper operation in all applications.
24
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902
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