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5059RH

4.5A 500KHz Step Down Switching Regulator Controller



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5059RH pdf
MIL-PRF-38534 CERTIFIED
RAD HARD 4.5A,
500KHz STEP DOWN
SWITCHING REGULATOR
M.S.KENNEDY CORP.
CONTROLLER
4707 Dey Road Liverpool, N.Y. 13088
FEATURES:
Manufactured using
Rad Hard RH1959MILDICE
Radiation Tested to TBD Krad(Si) (Method 1019.7 Condition A)
500KHz Constant Switching Frequency:Synchronizable to 1MHz
4.5A Integrated Switch
Internal Slope Compensation
Input Voltage Range from 4.3V to 16V
Cycle by Cycle Current Limit
Output Voltages Down to 1.21V
Contact MSK for MIL-PRF-38534 Qualification Status
5059RHwww.DataSheet4U.com
(315) 701-6751
DESCRIPTION:
The MSK 5059RH is a radiation hardened 500KHz switching regulator controller capable of delivering up to 4.5A of
current to the load. A fixed 500KHz switching frequency allows the use of smaller inductors reducing required board space
for a given design. The 4.5A integrated switch leaves only a few application specific components to be selected by the
designer. The MSK 5059RH simplifies design of high efficiency radiation hardened switching regulators that use a minimum
amount of board space. The device is packaged in a hermetically sealed 16 pin flatpack and is available with straight or gull
wing leads.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
POL Applications
Satellite System Power Supply
Step Down Switching Regulator
Microprocessor, FPGA Power Source
High Efficiency Low Voltage Subsystem Power Supply
1
PIN-OUT INFORMATION
1 VINA
2 VINB
3 VINC
4 VIND
5 VINE
6 BOOST
7 FB
8 GND
16 SWA
15 SWB
14 SWC
13 SWD
12 SWE
11 SYNC
10 SHDN
9 VC
PRELIMINARY Rev. A 11/09



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5059RH pdf
ABSOLUTE MAXIMUM RATINGS 7
VIN
IOUT
FB
Input Voltage (VIN)
16V
○○○○○○○○○○ ○○○○
Output Current 8
4.5A
○○○○○○○○○○○ ○○○○
BOOST Voltage 30V○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
BOOST Above Input Voltage
15V
○○○○○○○○
SHDN Pin Voltage 7V○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
FB Pin Voltage 3.5V○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
FB Pin Current 1mA○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
www.DataSheet4U.com
P Power Dissipation TBDD
○○○○○○○○○○○○○○○○○○
TJ
Junction Temperature
+150°C
TST
Storage Temperature Range
-65°C to +150°C
TLD Lead Temperature Range
(10 Seconds) 300°C○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
TC Case Operating Temperature
MSK 5059RH
-40°C to +85°C
○○○○○○○○ ○○○○
MSK 5059(K/H/E)RH
-55°C to +125°C
ELECTRICAL SPECIFICATIONS
NOTES:
1 Unless otherwise specified VIN=5V, VC=1.5V, BOOST=VIN+5V.
2 Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
3 Industrial grade and "E" suffix devices shall be tested to subgroup 1 unless otherwise specified.
4 Military grade devices ("H" and "K" suffix) shall be 100% tested to subgroups 1,2,3 and 4.
5 Subgroup 5 & 6 testing available on request.
6 Subgroup 1,4 TC=+25°C
Subgroup 2,5 TC=+125°C
Subgroup 3,6 TC=-55°C
7 Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle.
8 The absolute maximum current of 4.5A applies for duty cycles of 0.75 or lower.
De-rate linearly from 4.5A at D=0.75 to 3.375A at D=100.
9 Pre and Post irradiation limits at 25°C, up to TBD Krad(Si) TID, are identical unless otherwise specified.
2 PRELIMINARY Rev. A 11/09



Part Number 5059RH
Description 4.5A 500KHz Step Down Switching Regulator Controller
Maker MSK - MSK
Total Page 8 Pages
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