ISL75051SEH INTERSIL [Intersil Corporation], ISL75051SEH Datasheet

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ISL75051SEH

Manufacturer Part Number
ISL75051SEH
Description
3A, Rad Hard, Positive, Ultra Low Dropout Regulator
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
3A, Rad Hard, Positive, Ultra Low Dropout Regulator
ISL75051SEH
The ISL75051SEH is a radiation hardened low-voltage,
high-current, single-output LDO specified for up to 3.0A of
continuous output current. These devices operate over an input
voltage range of 2.2V to 6.0V and are capable of providing
output voltages of 0.8V to 5.0V adjustable based on resistor
divider setting. Dropout voltages as low as 65mV can be
realized using the device.
The OCP pin allows the short circuit output current limit
threshold to be programmed by means of a resistor from the
OCP pin to GND. The OCP setting range is from 0.5A minimum
to 8.5A maximum. 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 subsequently enters an ON/OFF
cycle until the fault is removed. The ENABLE feature allows the
part to be placed into a low current shutdown mode that
typically draws about 1
with a typical low ground current of 11mA, which provides for
operation with low quiescent power consumption.
The device is optimized for fast transient response and single
event effects. This reduces the magnitude of SET seen on the
output. Additional protection diodes and filters are not needed.
The device is stable with tantalum capacitors as low as 47µF
and provides excellent regulation all the way from no load to
full load. Programmable soft-start allows the user to program
the inrush current by means of the decoupling capacitor value
used on the BYP pin.
Applications
• LDO Regulator for Space Application
• DSP, FPGA and µP Core Power Supplies
• Post-regulation of Switched Mode Power Supplies
• Down-hole Drilling
VIN
EN
August 28, 2012
FN8294.0
220µF
ROCP
0.1µF
FIGURE 1. TYPICAL APPLICATION
OCP
VIN
EN
PG
VIN
µ
ISL75051SEH
A. When enabled, the device operates
PG
1
VOUT
GND
BYP
ADJ
R2
R1
2.67k
4.7n
100pF
0.1µF
0.1µF
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
VOUT
220µF
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• Output Current Up to 3.0A at T
• Output Accuracy ±1.5% over MIL Temp Range
• Ultra Low Dropout:
• Noise of 100µV
• SET Mitigation with No Added Filtering/Diodes
• Input Supply Range: 2.2V to 6.0V
• Fast Load Transient Response
• Shutdown Current of 1µA Typ
• Output Adjustable Using External Resistors
• PSRR 66dB Typ @ 1kHz
• Enable and PGood Feature
• Programmable Soft-start/Inrush Current Limiting
• Adjustable Overcurrent Limit from 0.5A to 8.5A
• Over-temperature Shutdown
• Stable with 47µF Min Tantalum Capacitor
• 18 Ld Ceramic Flatpack Package
• Radiation Environment
*Product capability established by initial characterization. The
"EH" version is acceptance tested on a wafer by wafer basis to
50 krad(Si) at low dose rate
0.30
0.25
0.20
0.15
0.10
0.05
0.00
DLA SMD#5962-11212
- 65mV Typ Dropout at 1.0A
- 225mV Typ Dropout at 3.0A
- High Dose Rate (50-300rad(Si)/s) . . . . . . . . . 100krad(Si)
- Low Dose Rate (0.01rad(Si)/s). . . . . . . . . . . . 100krad(Si)*
0.00
All other trademarks mentioned are the property of their respective owners.
0.50
FIGURE 2. DROPOUT vs I
|
RMS
Copyright Intersil Americas Inc. 2012. All Rights Reserved
1.00
from 300Hz to 300kHz
1.50
I
OUT
J
= +150°C
(A)
2.00
+150°C
OUT
2.50
+25°C
3.00
+125°C
3.50

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ISL75051SEH Summary of contents

Page 1

... Rad Hard, Positive, Ultra Low Dropout Regulator ISL75051SEH The ISL75051SEH is a radiation hardened low-voltage, high-current, single-output LDO specified for up to 3.0A of continuous output current. These devices operate over an input voltage range of 2.2V to 6.0V and are capable of providing output voltages of 0.8V to 5.0V adjustable based on resistor divider setting ...

Page 2

... ISL75051SEH 520MV REFERENCE BIAS 450mV EN 10 BYP 9 511 OCP 11 8 ADJ VIN 12 VOUT 7 VIN 13 6 VOUT VIN 14 VOUT 5 ISL75051SEH VOUT VIN 15 4 VIN 3 VOUT 16 VIN 17 VOUT 2 PG GND 18 1 0.1µF 4.32k VIN 2.26k 5.49k CURRENT OCP LIMIT ADJ POWER PMOS VOUT ...

Page 3

... These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. 2. For Moisture Sensitivity Level (MSL), please see device information page for ISL75051SEH. For more information on MSL please see Tech Brief TB363. 3 ...

Page 4

... DC Input Line Regulation DC Input Line Regulation DC Input Line Regulation DC Input Line Regulation DC Output Load Regulation DC Output Load Regulation 4 ISL75051SEH Thermal Information Thermal Resistance (Typical CDFP Package (Notes Storage Temperature Range .-65°C to +150°C Radiation Information (Note 4) Maximum Total Dose Dose Rate = 50-300rad(Si)/s ...

Page 5

... DEVICE START-UP CHARACTERISTICS: ENABLE PIN Rising Threshold Falling Threshold Enable Pin Leakage Current Enable Pin Propagation Delay Enable Pin Turn-on Delay Enable Pin Turn-on Delay Hysteresis 5 ISL75051SEH = 220µF 25mΩ and 0.1µF X7R +25° defines guaranteed limits TEST CONDITIONS V = 5.0V ...

Page 6

... DC Output Voltage Accuracy 17 VADJ Pin Voltage 18 VADJ Pin Voltage 19 VADJ Pin Voltage 20 VADJ Pin Voltage 21 VADJ Pin Voltage 6 ISL75051SEH = 220µF 25mΩ and 0.1µF X7R +25° defines guaranteed limits TEST CONDITIONS 2.2V < VIN < 6.0V 2.2V < VIN < 6.0V 2.2V < VIN < 6.0V ...

Page 7

... Enable Falling Threshold 52 Enable Pin Leakage Current 53 Enable Pin Leakage Current 54 Enable Hysterisis 55 Enable Hysterisis 56 Enable Pin Propagation Delay 57 PG Rising Threshold 58 PG Rising Threshold 59 PG Falling Threshold 7 ISL75051SEH T = +25°C, unless otherwise noted. A CONDITION V = 1.5V 5.5V OUT 1.8V 2.2V OUT 1.8V 3.6V OUT ...

Page 8

... VADJ Pin Voltage 22 VADJ Pin Voltage 23 VADJ Pin Voltage 24 VADJ Pin Voltage 25 VADJ Pin Voltage 26 VADJ Pin Voltage 27 VADJ Pin Voltage 28 DC Input Line Regulation 29 DC Input Line Regulation 8 ISL75051SEH T = +25°C, unless otherwise noted. A CONDITION 1mA SINK I ...

Page 9

... PG Falling Threshold 60 PG Falling Threshold 61 PG Hysteresis 62 PG Hysteresis 63 PG Low Voltage 64 PG Low Voltage 65 PG Leakage Current NOTE: 14. See the Radiation report. 9 ISL75051SEH T = +25°C, unless otherwise noted. A CONDITION V + 0.4V < V < 6.0V 5.0V OUT IN OUT V = 1.5V; 0A < I < 3.0A OUT LOAD IN OUT V = 1.8V ...

Page 10

... SPEC LIMIT 7 HDR BIAS LDR BIAS 6 LDR GROUND 5 HDR GROUND SPEC LIMIT 100 TOTAL DOSE, krad(Si) FIGURE 7. OUTPUT SHORT CIRCUIT CURRENT ISL75051SEH HDR BIAS 150 POST ANNEAL , 3.6V NO LOAD FIGURE 4. DC OUTPUT VOLTAGE, 1.5V OUT IN HDR BIAS HDR GROUND 150 POST ANNEAL , 6. LOAD FIGURE 6 ...

Page 11

... FIGURE 11. LOAD REGULATION, V 4.090 4.085 +128°C, V OUT 4.080 4.075 4.070 -58°C, V OUT 4.065 OUT 4.060 0.0 0.5 1.0 1.5 I (A) OUT FIGURE 13. LOAD REGULATION ISL75051SEH +128°C, V OUT 2.5 3.0 3 OUT OUT OUT OUT OUT 2.5 3.0 3 OUT OUT +25°C, V OUT 2.0 2.5 3.0 3 OUT OUT 0.522 +25° ...

Page 12

... OCP 2.61k OCP OCP 0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 V (V) IN FIGURE 17 OCP AT +128°C, V OCP FIGURE 19. TRANSIENT LOAD RESPONSE 47µF, 35mΩ OUT 12 ISL75051SEH (Continued) +128°C, V ADJ 5.0 5.5 6.0 6.5 7.0 = 1.00k = 2.00k = 3. 5.11k OCP 5.5 6.0 6.5 7.0 = 1.5V OUT = 3.3V 2.5V, FIGURE 20. TRANSIENT LOAD RESPONSE OUT 0.511k ...

Page 13

... FIGURE 23. POWER-ON AND POWER-OFF +25° 6V 0.8V OUT OUT 1000 100 10 1 0.1 300 3k FREQUENCY (Hz) FIGURE 25. NOISE (µV/√Hz) 13 ISL75051SEH (Continued) FIGURE 22. POWER-ON AND POWER-OFF +25°C, = 0.5A, PGOOD TURN-ON FIGURE 24. POWER-ON AND POWER-OFF +25°C, = 0.5A, PGOOD TURN-OFF 30k 300k ...

Page 14

... At the lower limit of ESR = 6mΩ, the phase margin is about 51°C. On the high side, an ESR of 100mΩ is found to limit the gain margin at around 10dB. The typical GM/PM seen with capacitors are shown in Table 2. 14 ISL75051SEH TABLE 2. TYPICAL GM/PM WITH VARIOUS CAPACITORS CAPACITANCE (µF) 47 ...

Page 15

... VIN VIN I1 I2 90µAdc 0.5µAdc U1 +IN BYPASS INT SS NODE -IN EXT PIN -IN ISL75051SEH 0.1µF 50pF 0 0 FIGURE 29. SOFT-START 15 ISL75051SEH Current Limit Protection The RH LDO incorporates protection against overcurrent due to any short or overload condition applied to the output pin. The current limit circuit becomes a constant current source when the ...

Page 16

... VIN 1078 -2965 11 VIN 1078 -1853 12 VIN 1078 -711 13 PG 420 -25 16 ISL75051SEH BACKSIDE FINISH Silicon PROCESS 0.6µM BiCMOS Junction Isolated ASSEMBLY RELATED INFORMATION Substrate Potential Unbiased ADDITIONAL INFORMATION Worst Case Current Density 5 2 < A/cm Transistor Count 2932 Layout Characteristics Step and Repeat 4555µ ...

Page 17

... No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see 17 ISL75051SEH www.intersil.com/askourstaff http://rel.intersil.com/reports/search.php For additional products, see www.intersil.com/product_tree www.intersil.com/design/quality CHANGE www.intersil.com/products ISL75051SEH www.intersil.com for a FN8294.0 August 28, 2012 ...

Page 18

... LEAD FINISH 0.004 (0.102) 0.010 (0.254) BASE METAL 0.004 (0.102) 0.017 (0.432) 0.013 (0.330) 0.0015 (0.04) MAX 0.020 (0.508) 0.013 (0.330) 3 SECTION A-A 18 ISL75051SEH 0.015 (0.381) PIN NO. 1 0.005 (0.127 OPTIONAL PIN NO AREA TOP VIEW 0.038 (0.97) 0.397 (10.084) 6 0.026 (0.66) 0.377 (9.576) 0.283 (7.19) ...

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