SLTS034A Datasheet, PDF (1/10 Pages) Texas Instruments – 8A Single Device Power, Up to 90% efficiency (PT6501), Small SIP Footprint

PT6500 Series
8 Amp 5V/3.3V Input Adjustable ISR
with Short-Circuit Protection
SLTS034A
(Revised 8/23/2000)
• 8A Single Device Power
• Up to 90% efficiency (PT6501)
• Small SIP Footprint
• Standby Function
• Internal Short Circuit Protection
• Over-Temperature Protection
• Adjustable Output Voltage
The PT6500 series is a high perfor-
mance +3.1 to 6V input, 8 Amp, 14-Pin
SIP (Single In-line-Package) Inte-
grated Switching Regulator (ISR).
This ISR allows the integration of
high-speed, low-voltage Pentium pro-
cessors and their support logic into
existing 3.3V or 5V systems without
redesigning the central power supply.
The PT6502 (1.5V) provides the low
terminating voltages required by BTL/
Futurebus+, CTT, HP, and GTL Buses
from existing 3.3V or 5V power rails.
Standard Application
V _oA D J
V_IN
V_oS E N S E
4,5,6
14
1
P T 6 5 0 0 ^11,12,13
V_OUT
+
C₁
STBY
3
7,8,9,10
Q1
+
C₂
COM
COM
C₁ = Required 330µF electrolytic *
C₂ = Required 330µF electrolytic *
* See footnotes
LOAD
Pin-Out Information
Pin Function
1
Remote Sense
2
Do not connect
3
STBY*-Standby
4
Vin
5
Vin
6
Vin
7 _GND
8 GND
9 GND
10 GND
11
Vout
12
Vout
13
Vout
14
Vout Adjust
Ordering Information
PT6501! = 3.3 Volts
† PT6502! = 1.5 Volts
PT6503! = 2.5 Volts
PT6504! = 3.6 Volts
† PT6505! = 1.2 Volts
† PT6506! = 1.8 Volts
† PT6507! = 1.3 Volts
† PT6508! = 1.7 Volts
†3.3V Input Bus Capable
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Heat Tab Configuration
None
Side
Vertical Through-Hole N
R
Horizontal Through-Hole A
G
Horizontal Surface Mount C
B
Pkg Style 400
Specifications
Characteristics
(T_a=25°C unless noted)
Output Current
Current Limit
Short Circuit Current
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
with Co = 330µF
Efficiency
Symbols
Io
I_cl
I_sc
Vin
∆Vo
Regline
Regload
V_n
t_tr
Vos
η
Switching Frequency
ƒo
Absolute Maximum
Ta
Operating Temperature Range
Thermal Resistance
θ_ja
Conditions
Over Vin range
Vin=+5V
Vin=+5V
0.1≤ Io≤ 8.0A
Vo=2.5V and 3.3V
Vo≤1.8V
Vo=3.6V
Vin = +5V, Io = 8.0A
T_a = 0 to +70°C
4.5V ≤ Vin ≤ 6.0V, Io = 8.0A
3.1V ≤ Vin ≤ 6.0V, Io = 8.0A
4.5V ≤ Vin ≤ 6.0V, Io = 8.0A
Vo ≥3.3V
Vo ≤1.8V
Vo =2.5V
0.1 ≤ Io ≤ 8.0A, Vin = +5V
Vo ≥3.3V
Vo ≤1.8V
Vo =2.5V
Vin = +5V, Io = 8.0 Amp
—
Io step from 4A to 8.0A
—
Vo over/undershoot
—
Vin = +5V, Io = 3.0A
Vo ≥3.3V
Vo =2.5V
Vo =1.8V
V_o =1.5V
Vo =1.2V
V_in = +5V, I_o = 8.0A
V_o ≥3.3V
Vo =2.5V
Vo =1.8V
Vo =1.5V
Vo =1.2V
Over Vin and Io ranges
Free Air Convection (40-60LFM)
Min
0.1 (1)
—
—
4.5
3.1
4.8
Vo-0.1
PT6500 SERIES
Typ
Max
—
8.0
13.0
20.0
15.0
—
—
6
—
6
—
6
—
Vo+0.1
—
±7
—
±3
±7
—
±17
—
±12
±13
50
—
100
—
150
—
—
90
—
85
—
78
—
76
—
67
—
83
—
76
—
74
—
68
—
65
475
600
–40 (3)
—
±17
±8
±13
±33
±23
±25
mVpp
µsec
mV
—
—
—
—
—
—
—
—
—
—
725
+85 (4)
Units
A
A
Apk
V
V
mV
mV
%
%
kHz
°C
—
15
—
°C/W
Continued
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