Electronics
SAT8601
Linear Voltage Regulator, 3A & 5A, Ultra- Low- Dropout, (ULDO)
(Preliminary)
FEATURES
Ultra Low Dropout Voltage – 300mV @ 3.0A
Compatible with industry standard OMR9600/IRUH Series
Fixed and Adjustable versions
K-level screening available
Shutdown pin for output control
Thermal Shutdown @ 150 deg. C
Optimized for operation at +3.3Vin or +5Vin
DESCRIPTION
The SAT8601 is a military qualified, ultra low dropout linear regulator designed for high
reliability applications. Assembled in a hermetic MO-078 package, the SAT8601 provides
shutdown control and an ultra low drop out of 300mV @ 3A and 450mV at 5A. It is optimized
for operation at +5V input or +3.3V input. Only one resistor is needed to set-up the output
voltage in the adjustable configuration. The SAT8601 is well suited for low-noise high
efficiency applications. The SAT8601 features fast transient response, which minimizes the size
of required output capacitors. The internal capacitors used in the manufacturing of this device are
in accordance with
MIL-PRF-123
or
MIL-PRF-55365.
BLOCK DIAGRAM
MO-078 Package
Adjustable Version
1
V
IN
3
V
OUT
Fixed Output Version
1
V
IN
3
V
OUT
5
N/C
DRIVE
User Defined
Resistor for
Desired V
OUT
DRIVE
4
SHDN
FB
5
ADJ
4
SHDN
FB
GND
GND
2
2
SatCon Electronics
1
SAT8601-web Preliminary Rev 1
ABSOLUTE MAXIMUM RATINGS
(Exceeding maximum ratings may damage the device)
Symbol
Vin
Io
Pd
Rthjc
Tstg
Tj
Tsold
Parameter
DC input Voltage Vin-Vground
Output Current
Power Dissipation Tcase=25deg.C
Thermal Resistance, Junction to Case
Storage Temperature
Operating Temperature Range
Maximum Soldering Temperature, 10sec
Value
-3 (3A Version) -5 (5A Version)
10
10
6.5
9
25
25
4.0
-65 to +150
-55 to +125
300
4.0
-65 to +150
-55 to +125
300
o
Unit
V
A
W
C/W
o
o
o
C
C
C
ELECTRICAL CHARACTERISTICS @ Ta=-55deg.C to +125deg.C
(Unless Otherwise Specified)
Symbol
Parameter
Test Conditions
-3 (3A Version)
Min
Vout
Vin
(+3.3)
Vin
(+5.0)
Vdrop
Isc
Output Voltage accuracy
Input Voltage Range: +3.3V,
(Note 3)
Input Voltage Range: +5.0V
(Note 3)
Dropout Voltage
Current Limit
Ripple Rejection
Ishdn
Shutdown Source Current
Vin=5.0V, Vin= 3.3V, Iout=2.0A
Iout=rated current
Iout=rated current
Iout=2.5A, Vout=+2.5V. (Note 2)
Vin=5.0V, Over current Latch Up
F=120Hz, Iout=50mA
Vshdn=5.0V
Vin=5.0, Vout < 0.5V. (Note 1)
1.0
3.5
65
200
1.6
2.0
1.0
2.9
4.5
Typ
2.0
Max
-5 (5A Version) Units
Min
Typ
2.0
Max
%
3.6
5.5
0.45
5.5
65
200
1.6
2.0
V
A
dB
uA
V
V
3.6
5.5
0.35
2.9
4.5
Vshdn Shutdown Input threshold
Application Circuit
V
out
= V
ref
x (1+R
adj
/1000), with Vref~1.265 Volts
SatCon Electronics
2
SAT8601-web Preliminary Rev 1
Adjustable 3/5 Amp Regulator
Basic Fixed 3/5 Amp Regulator
Notes:
1. Shutdown pin voltage must be > 2.0V to initiate output inhibit. Pin should be grounded if not used.
2. Voltage dropout is dependent on a minimum input Voltage of +2.9V. Specification applies only to output
voltages of +2.5V or greater. Output Voltages below 2.5V will have a greater minimum dropout
requirement.
3. The SAT8601 is optimized for specific Input Voltage ranges. The –53 will have peak performance at
+3.6V to +2.8V. The –55 will have peak performance at +4.5V to +5.5V. Input voltages outside of this
range can affect short-circuit current and load current capability.
ORDERING INFORMATION*:
SAT8601
Product Number
SAT8601
-33
Current Designation
- 33 = 3A, +3.3V Version
- 35 = 3A, +5V Version
- 53 = 5A, +3.3V Version
- 55 = 5A, +5V Version
K
Screening Level
K = Class-K screened
B = Class-H (Full Mil. Comp.)
Blank= COTS version
T
Package Type
T = TO Style
-3.3
Available Output Voltage O
- ADJ = ADJUSTABLE
- 1.3 = +1.3V Fixed
-1.5 = +1.5V Fixed
- 1.8 = +1.8V Fixed
- 2.5 = +2.5V Fixed
- 3.3 = +3.3V Fixed
SatCon Electronics
3
SAT8601-web Preliminary Rev 1
PACKAGE OUTLINE:
MO-078 Package
PIN Assignments
Pin No
1
2
3
4
5
Pin Name
Vin
Gnd
Vout
SHDN
Adjust/ N/C
Pin Description
Input Voltage
Ground
Output Voltage
Shutdown Pin. Output reset occurs when Vshdn> 1.6V
Adjust pin for Adjustable Output , Not connected for fixed version.
SatCon Electronics
4
SAT8601-web Preliminary Rev 1
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