PT6420 Datasheet, PDF (1/5 Pages) Texas Instruments – 3 AMP ADJUSTABLE INTEGRATED SWITCHING REGULATOR

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PT6420
Series
3 AMP ADJUSTABLE INTEGRATED
SWITCHING REGULATOR
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
• Adjustable Output Voltage
• 85% Efficiency
• Small SIP Footprint
• Input Voltage Range: 4.5V to 5.5V
• Remote Sense Capability
The PT6420 is a new addition to
the Power Trends 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.
Standard Application
Remote
Sense
1
V_IN
4,5,6
C1 +
100µF
COM
PT6420
7,8,9,10
14
11,12,13
R1
(VOUP)
R2
(VODOWN)
V_OUT
C2 +
100µF
COM
C₁ = Required 100µF electrolytic
C₂ = Required 100µF electrolytic
Specifications
Pin-Out Information
Pin Function
1 Remote Sense
2 Do not connect
3 Do not connect
4
V_in
5
V_in
6
V_in
7 _GND
8 GND
9 GND
10 _GND
11
Vout
12
Vout
13
Vout
14
Vout Adjust
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
Pkg Style 310
PT6420
POWER TRENDS
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole P
Horizontal Through-Hole D
Horizontal Surface Mount E
Note: Back surface
of product is
conducting metal.
Characteristics
(T_a = 25°C unless noted)
Output Current
Current Limit
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
with C2 = 100µF
Efficiency
Symbols
I_o
Icl
Vin
∆V_o
Reg_line
Regload
Vn
t_tr
Vos
η
Switching Frequency
ƒ_o
Absolute Maximum
T_a
Operating Temperature Range
Recommended Operating
Ta
Temperature Range
Thermal Resistance
θ_ja
Storage Temperature
Ts
Mechanical Shock
Mechanical Vibration
Conditions
4.5V ≤ V_in ≤ 5.5V
Vin = +5V
0.1A ≤ Io ≤ 3.0A
V_in = +5V, I_o = 3.0A
0°C ≤ Ta ≤ +70°C
4.5V ≤ V_in ≤ 5.5V, I_o = 3.0A
Vin = +5V, 0.3 ≤ Io ≤ 3.0A
Vin = 5V, Io = 3.0A
I_o step between 1.5A and 3.0A
Vo over/undershoot
V_in = +5V, I_o = 1.5A
Vo= 3.3V
Vo= 1.8V
Vo= 2.1V
Vo= 1.2V
4.5V ≤ V_in ≤ 5.5V
0.3A ≤ Io ≤ 3.0A
Free Air Convection (40-60 LFM)
At Vin= 5V, Io=2.5A
Free Air Convection (40-60 LFM)
—
Per Mil-STD-883D, Method 2002.3 , 1 msec,
Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
PT6420 SERIES
Min
Typ
0
—
—
3.6
4.5
—
Vo-0.05 3.3
—
±10
—
±10*
—
66
—
200
—
200
—
85
—
74
—
77
—
63
500
650
0
—
0
—
—
25
-40
—
—
500
—
15
Max
3.0
5.0
5.5
Vo+0.05
±25
±25*
165
—
—
—
—
—
—
800
+85
Units
A
A
V
V
mV
mV
mVpp
µSec
mV
%
%
%
%
kHz
°C
+70**
—
+125
—
—
°C
°C/W
°C
G’s
G’s
Weight
—
—
—
6.5
—
grams
*When used with remote sense function.
**See Thermal Derating chart.
Note: The PT6420 Series requires two 100µF electrolytic or tantalum capacitors for proper operation in all applications.
26
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com