PT6305_14 Datasheet, PDF (1/6 Pages) Texas Instruments – Internal Short Circuit Protection

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PT6305
Series
3 AMP HIGH-PERFORMANCE
ADJUSTABLE ISR
• Single-Device 5V to 3V Power
• 85% Efficiency
• 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
The PT6305N is Power Trends’
new high performance +5V to +3.3V, 3
Amp, 12-Pin SIP (Single In-line-
Package) Integrated Switching
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.
Standard Application
VIN
(+)
C1
12
2,3,4
9,10,11
PT6305,6,7,8
C2
5,6,7,8
VO Adjust
VOUT
(+)
COM
COM
C₁ = Optional electrolytic (100µF)
C₂ = Required 100µF electrolytic (No tantalum)
See capacitor application note on page 43.
Specifications
Pin-Out Information
Pin No.
1
2
3
4
5
6
Function
N/C
Vin
Vin
Vin
GND
GND
Pin No.
7
8
9
10
11
12
Function
GND
GND
Vout
Vout
Vout
Adjust
(See page 40.)
1
12
Ordering Information
PT6305n = +3.3 Volts
PT6306n = +1.8 Volts
PT6307n = +2.1 Volts
PT6308n = +1.2 Volts
(For dimensions, see page 66.)
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
Heat Tab Configuration
None
Side
N
R
A
G
C
B
(See Thermal Application Notes on page 44 for heat tab
application data.)
Characteristics
(T_A=25˚C unless noted)
Output Current
Symbols
Io
Conditions
4.5 ≤ Vin ≤ Vin MAX
PT6305 SERIES
Min
Typ
0.3
—
Max
3.0**
Units
ADC
Current Limit
Icl
Vin = +5V
—
3.6
5.0
ADC
Short Circuit Current
Isc
Input Voltage Range
V_in
Vin = +5V
0.3A ≤ Io ≤ 3.0A
PT6305N
PT6306N
PT6307N
PT6308N
—
5.0
—
Apk
4.5
—
4.5
—
4.5
—
4.5
—
9
VDC
9
VDC
9
VDC
6.0
VDC
Static Voltage Tolerance
V_o
Vin = +5V, Io = 3.0A
0°C ≤ Ta ≤ +70°C
PT6305N
PT6306N
PT6307N
PT6308N
3.2
3.3
3.4
VDC
1.7
1.8
1.9
VDC
2.0
2.1
2.2
VDC
1.1
1.2
1.3
VDC
Line Regulation
Load Regulation
Regline
Regload
4.5V ≤ Vin ≤ 5.5V, Io = 3.0A
Vin = +5V, 0.3 ≤ Io ≤ 3.0A
—
±25
±50
mV
—
±25
±50
mV
Vo Ripple/Noise pk-pk
Vn
Vin = 5V, Io = 3.0A
—
66
—
mV
Transient Response
with C2 = 100µF
Efficiency
t_tr
Io step between 1.5A and 3.0A
Vos
Vo over/undershoot
—
200
—
µSec
—
200
—
mV
η
Vin = +5V, Io = 1.5A PT6305N
—
85
—
%
PT6306N
—
74
—
%
PT6307N
—
77
—
%
PT6308N
—
63
—
%
V_in = +5V, I_o = 3.0A
PT6305N
PT6306N
PT6307N
PT6308N
—
80
—
%
—
68
—
%
—
72
—
%
—
57
—
%
Switching Frequency
ƒ_o
4.5 ≤ Vin ≤ Vin MAX
0.3A ≤ Io ≤ 3.0A
500
650
800
KHz
Operating Temperature
T_a
Thermal Resistance
θja
Free Air Convection (40-60 LFM)
Over Vin and Io Ranges
Free Air Convection (40-60 LFM)
0
—
+70*
°C
—
25
—
°C/W
Storage Temperature
Ts
—
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3 Condition A, 1 msec, Half Sine,
mounted to a fixture
—
—
500
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2 Condition A, 20-2000 Hz
—
—
15
G’s
Weight
—
—
—
11.2
—
grams
Relative Humidity
—
Non-condensing
0
—
95
%
*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 [phone] Fax: [phone]