1.5A, Rad Hard, Positive, High Voltage LDO
ISL75052SEH
Features
The ISL75052SEH is a radiation hardened, single output LDO
specified for an output current of 1.5A. The device operates from
an input voltage range of 4.0V to 13.2V and provides for output
voltages of 0.6V to 12.7V. The output is adjustable based on a
resistor divider setting. Dropout voltages as low as 75mV (at
0.5A) typical can be realized using the device. This allows the
• DLA SMD 5962-13220
• Input supply range 4.0V to 13.2V.
• Output Current up to 1.5A at a T = +150°C
J
• Best in class Accuracy ±1.5%
- Over line, load and temperature
• Ultra Low Dropout:
user to improve the system efficiency by lowering V to nearly
IN
V
.
OUT
- 75mV Dropout (typ) @ 0.5A
- 225mV Dropout (typ) @ 1.5A
The ENABLE feature allows the part to be placed into a low
shutdown current mode of 165µA (typ). When enabled the device
operates with a low ground current of 11mA (typ), which provides
for operation with Low Quiescent Power consumption.
• Noise of 100µV
(typ) between 300Hz to 300kHz
RMS
• SET mitigation with no added filtering/diodes
• Shutdown Current of 165µA (typ)
• Externally adjustable Output Voltage
• PSRR 65dB (typ) @ 1kHz
The device has superior transient response and is designed
keeping Single Event Effects in mind. This results in reduction of
the magnitude of SET seen on the output. There is no need for
additional protection diodes and filters.
• ENable and PGood Feature
COMP pin is provided to enable the use of external
• Programmable Soft-Start/In-rush Current Limiting
• Adjustable Overcurrent Protection
• Over-Temperature Shutdown
compensation. This is achieved by connecting a resistor and
capacitor from COMP to ground. The device is stable with
Tantalum capacitors as low as 47µF (KEMET T525 series) and
provides excellent regulation all the way from no Load to full
Load. The programmable soft-start allows one to program the
inrush current by means of the decoupling capacitor used on the
BYP pin. The OCP pin allows the short circuit output current limit
threshold to be programmed by means of a resistor from OCP pin
to GND. The OCP setting range is from a 0.16A min to 3.2A max.
The resistor sets the constant current threshold for the output
under fault conditions. The thermal shutdown disables the output
if the device temperature exceeds the specified value, it will
subsequently enter a ON/OFF cycle till the fault is removed.
• Stable with 47µF Min Tantalum Capacitor
• Package 16 Ld Flat Pack
• Radiation Environment
- High Dose Rate (50-300rad(Si)/s) . . . . . . . . . 100krad(Si)
- Low Dose Rate (0.01rad(Si)/s). . . . . . . . . . . . 100krad(Si)*
- SET/SEL/SEB. . . . . . . . . . . . . . . . . . . . . . . . ..86 MeV.cm2/mg
*Product capability established by initial characterization. The
"EH" version is acceptance tested on a wafer-by-wafer basis to
50krad(Si) at low dose rate.
Applications
• LDO regulator for Space Power Systems
• DSP, FPGA and µP Core Power Supplies
• Post Regulation of SMPS and Down Hole Drilling
Related Literature
See AN1850, "ISL75052SEH Evaluation Board User's Guide"
See AN1851, "SEE Testing of the ISL75052SEH"
See AN1852, "Radiation Report of the ISL75052SEH"
0.30
EN
VIN
0.25
0.20
0.15
0.10
0.05
0.00
+150°C
3,4,5 VIN
VOUT
ADJ
1,2
+125°C
16
8
BYP
15
14
13
12
VOUT
2.5V
ISL75052SEH
OCP EN
0.1µF
200µF
25°C
9
VCCX
PG
GND
2.2k
0.1µF 200µF
10
COMP
15.8k
2.2n
Ω
300
0.1µF
0.1µF
22k
VIN
4.87k
1nF
22k
PG
0
0.5
1.0
1.5
OUT
2.0
I
(A)
LOAD
FIGURE 2. DROPOUT vs I
FIGURE 1. TYPICAL APPLICATION
May 29, 2013
FN8456.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners
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