Spark Logic

AZ1117C low dropout regulator pinout

GH15B is the documented SOT-223 marking for AZ1117CH-ADJTRG1. This family includes adjustable and six fixed outputs. Check the H, H2, R, R2 or D package code before using the pin map.

SOT-223 H

4 contacts Current package
SOT-223 H2 4 contacts
SOT-89 R 4 contacts
SOT-89 R2 4 contacts
TO-252 D 4 contacts

Diodes Incorporated · Order prefix AZ1117CH.

SOT-223 H pinout

SOT-223 H
Marked side, tab above the body and pins 1–3 below, left to right.
Selected pin details

1 · ADJ

Input · Control

Feedback pin. The regulator maintains about 1.25 V from OUT to ADJ.

Diodes DS36676 Rev. 5-2, p. 2

Electrical limits · Link to this pin

Wire the regulator for about 9 V

  • Input
    • CIN.1
    • Current-limited 11 V supply
  • Output
    • →
    • COUT.1
    • Meter positive
    • R1.1
  • Ground
    • CIN.2
    • COUT.2
    • Supply return
    • Meter common
    • R2.2
  • Feedback
    • →
    • R1.2
    • R2.1
CIN 10 µF between Input and GroundInputCIN 10 µFGround
COUT 22 µF between Output and GroundOutputCOUT 22 µFGround
R1 124 Ω between Output and FeedbackOutputR1 124 ΩFeedback
R2 768 Ω between Feedback and GroundFeedbackR2 768 ΩGround

Connection guide

All 4 pins

PinSignalDirectionFunction
1ADJ InputInput Feedback pin. The regulator maintains about 1.25 V from OUT to ADJ.
2OUT OutputOutput Regulated output. Use an output capacitor rated for the voltage and effective capacitance in service.
3IN SupplySupply Positive input. Allow dropout headroom and place the input bypass near the regulator.
TABOUT TabTab Metal tab on the same net as pin 2.

Signal assignments

Electrical limits

ParameterLimitConditions and source
Input voltage15 V maximum recommended15 V maximum recommended Maintain enough input-to-output headroom at the intended load. Diodes DS36676 Rev. 5-2, p. 4
Junction temperature−20 to +125 °C−20 to +125 °C Recommended operating range. Derate load for input–output voltage difference and board thermal resistance. Diodes DS36676 Rev. 5-2, p. 4
Dropout at 800 mA1.3 V max (SOT-223); 1.4 V max (TO-252)1.3 V max (SOT-223); 1.4 V max (TO-252) Specified at 1% output change. This table does not give the same guarantee for SOT-89. Diodes DS36676 Rev. 5-2, pp. 4–8
Output capacitor≥ 10 µF, ESR < 20 Ω≥ 10 µF, ESR < 20 Ω Low ESR ceramic is supported; account for DC bias. Diodes DS36676 Rev. 5-2, p. 3, note 4

Models and documents

The second line 816TI5 fits the SOT-223 YWWAXX traceability format (year digit 8, work week 16, assembly code T, batch suffix I5). The format does not identify the decade. The D variants share their electrical assignment, but the short center lead and package drawing options require checking the land pattern.

AZ1117CH-ADJTRG1
Adjustable output. Marking: GH15B.
AZ1117CH-1.2TRG1
1.2 V fixed output. Marking: GH16B.
AZ1117CH-1.5TRG1
1.5 V fixed output. Marking: GH15C.
AZ1117CH-1.8TRG1
1.8 V fixed output. Marking: GH16C.
AZ1117CH-2.5TRG1
2.5 V fixed output. Marking: GH15D.
AZ1117CH-3.3TRG1
3.3 V fixed output. Marking: GH16D.
AZ1117CH-5.0TRG1
5.0 V fixed output. Marking: GH15E.
  • Datasheet for AZ1117C· DS36676 Rev. 5-2; see pp. 2–4 for wiring and pp. 11–12 for order and marking codes.
  • Source register· Original document URLs, revisions and file checksums.