TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http: //www.microsemi.com
SINGLE 3 Amp & 4 Amp
POL REGULATORS
DEVICES
LEVELS AVAILABLE
MHP Series
(Formerly SAT8564 / SAT8565 Series)
(Consult Table 3 for Part Number Designations)
COTS
CLASS H
CLASS K
FEATURES
Smallest footprint in the Space Industry
Single 3 Amp and 4 Amp product (Note 1)
Efficiencies to 85%
Radiation Hard to 300K rad TID
SE results show no significant output transients through an LET of 58 MeV/(mg/cm
2
)
Both tabbed and tabless packages available
Optimized for 5V input. Consult factory for inputs up to 16V (Note 2)
Operates down to 4.3 Volts input
Current Mode Control
Adjustable output Voltage between 0V and 4V (depends on model, see table 3)
Parallelable models available (See separate Data Sheet for model MHP8566 Quad POL)
Synchronizable models available (See Table 3)
Enable function available
Soft start capable (See Figure 16)
Operates at a nominal frequency of 500KHz
DESCRIPTION
The MHP series are non-isolated Point of Load switching regulators for high reliability, military, and Space distributed
power applications. Fully integrated, these include a buck controller, inductor, and input / output capacitors combined
in a single package. They operate from an input voltage of +4.5V to +16V, providing step down power conversion to
output voltages as low as 0V. Operating features include output voltage adjust, output current limit, enable, external
synchronization and soft start. Some models can also be setup in a parallel configuration to increase output current
capability and reduce ripple on the input and output supplies. Careful design and layout ensure excellent stability,
transient response, and low noise operation. Packaged in compact metal cases, they operate over the full -55°C to
+125°C temperature range.
T4-LDS-0117 Rev. 10 (111028)
Page 1 of 13
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http: //www.microsemi.com
SINGLE 3 Amp & 4 Amp
POL REGULATORS
Table 1 – ABSOLUTE MAXIMUM RATINGS (Tc
= +25°C unless otherwise note)
Parameters / Test Conditions
Input Voltage (Note 2)
Enable Input Voltage
Sync Input Voltage
Symbol
V
in
V
en
V
sync
Tabless
MO-078
Approximate Weight
MO-078
SIP
Operating Temperature Range, Base of Package
Storage Temperature Range (<100 hrs cumulative)
Storage Temperature Range
THERMAL CHARACTERISTICS
Parameters / Test Conditions
Series Switch
Thermal Resistance, Junction-to-Case, MO-078 package
Series Switch
Thermal Resistance, Junction-to-Case, SIP
Symbol
R
JC
R
JC
Value
2.5
5
Unit
°C/W
°C/W
T
c
T
stg
T
stg
Value
16
7
7
8
10
11
-55 to +125
-65 to 150
-65 to 125
Unit
Vdc
Vdc
Vdc
Grams
Grams
Grams
°C
°C
°C
T4-LDS-0117 Rev. 10 (111028)
Page 2 of 13
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http: //www.microsemi.com
SINGLE 3 Amp & 4 Amp
POL REGULATORS
Table 2 – ELECTRICAL CHARACTERISTICS (See Note 5)
(T
A
= -55°C to +125°C unless otherwise noted)
Parameters / Test Conditions
Minimum input Voltage
(Note 10)
Symbol
Vin(min)
Vout
Kvi
Kvo
Fsync
Vsync
Isc
Ishdn
Vshdn
f
Min.
4.5
-1.65
-0.5
-1
580
Value
Nom
Max.
Unit
V
Output Voltage Accuracy
Vo = 1.21V
Line regulation
4.5V < Vin < 5.5V
Vo = 1.21V
Load regulation
1A < Iout < 3A (2A for MHP8565)
Synchronizing range
(Note 6)
10% < Duty cycle < 90%, Vsync = 0 to 4.5V
Sync threshold (25°C)
(Note 6)
+1.65
+0.5
+1
1000
1.5
6
-75
2.2
%
%
%
KHz
V
A
uA
V
KHz
Short Circuit Current Limit
Vo = 2.5V
Enable pin current in shutdown mode
Venable = 0V
Input Voltage on Enable pin to guarantee shutdown
(Note 4)
Operating Frequency Singles
(Note 6)
0.13
0.40
500
0.60
T4-LDS-0117 Rev. 10 (111028)
Page 3 of 13
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http: //www.microsemi.com
SINGLE 3 Amp & 4 Amp
POL REGULATORS
Table 3 – MODEL NUMBER FUNCTIONALITY CHART
PACKAGE TYPE
MODEL NUMBER
NOTES
MO-078
SIP
Flat
Pack
OUTPUT TYPE
Adj
Fixed
Note C
Remote
Sense
Note C
OTHER FUNCTIONALLTY
Output
Internal
Enable Parallelable Voltage Package
Compen-
Body
Pin
Note A
Range
sation
Note 9
NO
Note D
Note D
Note D
0 – 4V
0 – 4V
0 – 4V
0 – 4V
0 – 4V
0 – 4V
Ground
NO
FORMER P/N
MHP8565A$&
MHP8565P$&
MHP8564A$&
MHP8564F$&
MHP8564R$&
MHP8564S$&
3 Amp Series
3 Amp Series
4 Amp Series
4 Amp Series
4 Amp Series
4 Amp Series
SAT8565A-3$T-ADJ
SAT8565P-3$T-ADJ
SAT8564A-4$F-ADJ
SAT8564F-4$F-x.y
SAT8564R-4$F-x.y
SAT8564S-4$F-ADJ
Replace “$” with letter to denote required screening level
NOTE A: Parallelable devices have a synchronizing pin so
C = COTS
that units can be driven out of phase from each other for the
H = CLASS H
purpose of input and output Voltage Bus ripple reduction.
K = CLASS K
Other functions necessary for Paralleling are also available
Replace “&” with lead bend option
= No lead bend
-1 = SMT lead bend
-2 = lead bend down
-3 = lead bend up
-4 = space saving SMT lead bend
NOTE C: Fixed and remote sense part numbers must be
appendaged with fixed value of output Voltage. Example:
MHP8564F$&-1.8 for a 1.8V fixed output.
NOTE D: Sync PIN is available. Other functions necessary
for Paralleling are not available.
Products in shaded areas of the main chart are under development
T4-LDS-0117 Rev. 10 (111028)
Page 4 of 13
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http: //www.microsemi.com
SINGLE 3 Amp & 4 Amp
POL REGULATORS
Table 4 – SCREENING OPTIONS
C
TEST
Element Evaluation
Non-Destruct Wirebond Pull
Pre-Cap Visual
Temperature Cycle
Constant Acceleration
PIND
Pre-Burn In Electrical
Burn-In
Final Electrical Tests
Hermeticity (Fine and Gross Leak)
X-Ray
External Visual
Certified
NOTES:
1. Internal series switch is self protected and is rated to conduct 4.5 Amps minimum. However, limitations on
internal components plus the characteristics of PWM operation conspire to reduce further the minimum output
current available, especially at output Voltages above Vin/2. Minimum available output current is guaranteed
to be as specified (3 Amps or 4 Amps, depending on model number) at output Voltages of 2.5V and below,
assuming a clean layout. At 3.3V output with a 5V input, reduce available minimum output current by up to
0.5 Amp.
2. Internal components are rated at +16 Volts maximum, and are therefore properly derated for operation at a
nominal input of +5 Volts. For use at inputs as high as +12 – 15 Volts, please consult factory about your
derating requirements for a possible component change to allow properly derated operation.
3. Microsemi does not at this time have a MIL-PRF-38534 qualified radiation hardness assurance program.
4. If not used, or when on, Enable pin should be pulled up to a logic one (2.5V min, 7V max) through a resistor
of no more than 5K Ohms. Voltage on this pin to disable operation needs to be less than 0.13V.
5. Testing is accomplished at an output load of 1A, and at an output Voltage of 2.5V and an input of 5V UOS.
6. Synchronizing pin, if available (see model chart) must be grounded if not used. Consult factory when
contemplating use of frequencies above 580 kHz. Pin input impedance is 40K Ohms.
7. Guaranteed by design.
8. All package outline dimensions are in inches.
9. Consult factory for operation at output voltages between 0V and 1.21V.
10. Minimum input voltage is guaranteed by line regulation test.
T4-LDS-0117 Rev. 10 (111028)
Page 5 of 13
Cots
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
100% (25°C)
100%
N/A
Sample
N/A
H
K
Equivalent MIL-PRF-38534
(Note 3)
Class H
Class K
Sample
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
(160 Hours)
(320 Hours)
100%
100%
100%
100%
N/A
Yes
100%
100%
Yes
Yes
MIL-STD-
883
Method
2023
2017
1010
2001
2020
1015
1014
2012
2009
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