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ISL80103IRAJZ-T

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RENESAS Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-10(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ISL80103IRAJZ-T

RENESAS · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-10(3x3)

ISL80103IRAJZ-T from RENESAS, in a DFN-10(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VOUT power_out Output voltage pin of the LDO (pins 1 and 2 are both VOUT).
2 VOUT power_out Output voltage pin of the LDO (pins 1 and 2 are both VOUT).
3 ADJ input Adjust pin for externally setting VOUT through the feedback divider; the reference is 500mV.
4 PG output Power-good flag: logic low indicates VOUT is not in regulation; must be grounded if not used.
5 GND power_in Ground pin.
6 SS passive External soft-start capacitor adjusts inrush current; leave this pin open if not used.
7 ENABLE input VIN-independent chip enable, TTL and CMOS compatible; it must not be left floating and must be tied to VIN if unused.
8 DNC unconnected Do not connect; leave floating, and do not tie to ground or supply.
9 VIN power_in Input supply pin (pins 9 and 10 are both VIN).
10 VIN power_in Input supply pin (pins 9 and 10 are both VIN).
11 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer RENESAS
Package DFN-10(3x3)
Category Power Management (PMIC)
Pins 11

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Junction Temperature Range TJ -40 125 °C 4
VIN Relative to GND VIN 2.2 6 V 4
VOUT Range (lower limit) VOUT 800 mV 4
VOUT Range (upper limit) VOUT 5.5 V 4
PG, ENABLE, ADJ, SS Relative to GND 0 6 V 4
PG Sink Current 10 mA 4
VIN Relative to GND VIN -0.3 6.5 V 4
VOUT Relative to GND VOUT -0.3 6.5 V 4
PG, ENABLE, ADJ, SS Relative to GND -0.3 6.5 V 4
Latch-up -100 100 mA Tested per JESD78C, Class 2, Level A at +85°C 4
ESD Human Body Model 2.2 kV Tested per JESD22 A114F 4
ESD Charge Device Model 1 kV Tested per JESD22-C101C 4
Maximum Junction Temperature (Plastic Package) TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
DC Output Voltage Accuracy VOUT 0.5 % 2.2V < VIN < 6V; ILOAD = 0A 4
DC Output Voltage Accuracy VOUT -1.8 1.8 % 2.2V < VIN < 6V; 0A < ILOAD < 3A 4
DC Output Voltage Accuracy VOUT -1.8 -1.8 % 2.9V < VIN < 6V; 0A < ILOAD < full load 4
Feedback Pin VADJ 491 500 509 mV 0A < ILOAD < full load 4
DC Input Line Regulation -0.4 0.1 0.4 % 2.2V < VIN < 3.6V, VOUT = 1.8V 4
DC Input Line Regulation -0.8 0.1 0.8 % 2.9V < VIN < 6V, VOUT = 2.5V 4
DC Output Load Regulation (ISL80103) -0.8 -0.2 0.8 % ISL80103, 0A < ILOAD < 3A, 2.9V < VIN < 6V; VOUT = 2.5V 4
Feedback Input Current 0.01 1 µA VADJ = 0.5V 4
Ground Pin Current IQ 7.5 9 mA ILOAD = 0A, VOUT + 0.4V < VIN < 6V, VOUT = 2.5V 4
Ground Pin Current IQ 8.5 12 mA ILOAD = 3A, VOUT + 0.4V < VIN < 6V, VOUT = 2.5V 4
Ground Pin Current in Shutdown ISHDN 0.4 µA EN = 0V, VIN = 5V 4
Ground Pin Current in Shutdown ISHDN 3.3 16 µA EN = 0V, VIN = 6V 4
Dropout Voltage (ISL80103) VDO 120 185 mV ILOAD = 3A, VOUT = 2.5V 5
Dropout Voltage (ISL80103) VDO 120 244 mV ILOAD = 3A, VOUT = 5.5V 5
Output Short-Circuit Current (3A Version) ISC 5 A ISL80103, VOUT = 0V 5
Thermal Shutdown Temperature TSD 160 °C 5
Thermal Shutdown Hysteresis TSDn 15 °C 5
Input Supply Ripple Rejection PSRR 55 dB f = 1kHz, ILOAD = 1A; VIN = 2.2V 5
Input Supply Ripple Rejection PSRR 62 dB f = 120Hz, ILOAD = 1A; VIN = 2.2V 5
Output Noise Voltage 49 µVRMS VIN = 2.2V, VOUT = 1.8V, ILOAD = 3A, BW = 100Hz < f < 100kHz 5
Turn-On Threshold VEN(HIGH) 0.616 0.8 0.95 V 2.2V < VIN < 6V 5
Turn-Off Threshold VEN(LOW) 0.463 0.6 V 2.2V < VIN < 6V 5
Hysteresis VEN(HYS) 135 mV 2.2V < VIN < 6V 5
Enable Pin Turn-On Delay tEN 150 µs COUT = 10µF, ILOAD = 1A 5
Enable Pin Leakage Current 1 µA VIN = 6V, EN = 3V 5
Reset Pull-Down Resistance RPD 323 Ω 5
Soft-Start Charge Current ICHG -7 -4.5 -2 µA 5
VOUT PG Flag Threshold 75 84 92 %VOUT 5
VOUT PG Flag Hysteresis 4 % 5
PG Flag Low Voltage 47 100 mV ISINK = 500µA 5
PG Flag Leakage Current 0.05 1 µA VIN = 6V, PG = 6V 5
Thermal Resistance Junction-to-Ambient (Typical) θJA 45 °C/W 10 Ld 3x3 DFN (Notes 5, 6) 4
Thermal Resistance Junction-to-Case (Typical) θJC 4 °C/W 10 Ld 3x3 DFN 4
Thermal Resistance Junction-to-Board at Pin 3 θJB 14.7 °C/W Note 7 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 9, 10 VIN Input supply pin EPAD EPAD must be connected to a copper plane with as 2

CAD (KiCad official)

  • Symbol: ISL80103IRAJZ-T
  • Footprint: Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
  • 3D model: DFN-10(3x3) (KiCad packages3D, STEP)
  • 3D model files: isl80103irajz-t-etched.step / isl80103irajz-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); isl80103irajz-t.step / isl80103irajz-t.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: RENESAS datasheet (17 pp, sha256 66fe8917f8939333, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF