Electronics
SAT8601
Linear Voltage Regulator, 3A & 5A, Ultra- Low- Dropout, (ULDO)
FEATURES
Ultra Low Dropout Voltage – 300mV @ 3.0A
Compatible with industry standard IRUH Series
Fixed and Adjustable versions
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 an
ultra low drop out voltage of 300mV @ 3A and 450mV at 5A. The SAT8601 is optimized for
operation at +5V input or +3.3V input. The internal capacitors used in the manufacturing of this
device are in accordance with
MIL-PRF-123
or
MIL-PRF-55365.
The components are de-rated
per SatCon’s Class-K requirements.
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 Rev 12, 4/17/2007
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)
10.0
10.0
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= -55ºC to +125ºC)
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=2.0A
Iout=4.0A
Iout=2.5A, Vout=+2.5V. (Note 3)
Vin=5.0V, 3.0V
≤
Vin
≤
3.6V
F=120Hz, Iout=50mA
Vshdn=5.0V
Vin=5.0, Vout < 0.5V. (Note 2)
1.0
3.5
65
200
1.6
2.0
1.0
2.8
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
V
V
A
dB
uA
V
3.6
5.5
0.35
2.8
4.5
Vshdn Shutdown Input threshold
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 +2.8V. 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
+2.8V to +3.6V. The –55 will have peak performance at +4.5V to +5.5V. Input voltages outside of this
range can affect short-circuit current, load current capability and create electrical overstress to internal
components.
SatCon Electronics
2
SAT8601 web Rev 12
Application Circuit
V
out
= V
ref
x (1+R
adj
/1000), with Vref~1.265 Volts
Adjustable 3/5 Amp Regulator
Basic Fixed 3/5 Amp Regulator
SatCon Electronics
3
SAT8601 web Rev 12
PACKAGE OUTLINE:
MO-078 Package
Pin Assignments
Pin No
1
2
3
Pin Name
Vin
Gnd
Vout
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.
4
SHDN
5
Adjust/ N/C
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
Blank= SatCon Commercial screen
H= Class H Compliant
K= Class K compliant
EM = Eng. Model
T
Package Type
T = MO-078
-3.3
Available Output Voltage Options
- 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
Electronics
165 Cedar Hill st., Marlborough, Massachusetts 01752, USA
Tel: 508-485-6350
Fax: 508-485-5168
E-Mail:
Electronics.sales@satcon.com
For more information about SatCon Power Products, visit us at:
www.satconelectronics.com
Specifications in this document are subject to change without notice.
SatCon Electronics
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SAT8601 web Rev 12
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