ST LD1117ADT33TR
| Manufacturer | |
| MPN | LD1117ADT33TR |
| LCSC Part # | C157401 |
| Packaging | TO-252-2(DPAK) |
| Customer # | |
| Key Attributes | Low Dropout Fixed and Adjustable Positive Voltage Regulators |
| Datasheet | ST LD1117ADT33TR |
| RoHS Compliance | 3 documents available |
| Alternative Parts | 5 |
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | |
| Manufacturer | ST | |
| Packaging | TO-252-2(DPAK) | |
| Output Voltage | 3.3V | |
| Number of Outputs | 1 | |
| Operating Temperature | 0℃~+125℃@(Tj) | |
| Supply Current (Iq) | 5mA | |
| Output Configuration | Positive | |
| Operating Voltage | 10V | |
| Output Current | 1A | |
| Features | Over Current Protection;Thermal shutdown | |
| Output Type | Fixed |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | |
| Manufacturer | ST | |
| Packaging | TO-252-2(DPAK) | |
| Output Voltage | 3.3V | |
| Number of Outputs | 1 | |
| Operating Temperature | 0℃~+125℃@(Tj) |
| Type | Description | |
|---|---|---|
| Supply Current (Iq) | 5mA | |
| Output Configuration | Positive | |
| Operating Voltage | 10V | |
| Output Current | 1A | |
| Features | Over Current Protection;Thermal shutdown | |
| Output Type | Fixed |
Introduction
The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (V_REF = 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT - 223, DPAK and TO - 220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 μF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25°C.
Features
- Low dropout voltage: – 1.15 V typ. (ΔI_OUT = 1 A, 25°C)
- Very low quiescent current: – 5 mA typ. (25°C)
- Output current up to 1 A
- Fixed output voltage of: – 1.2 V, 1.8 V, 3.3 V
- Adjustable version availability (V_REF = 1.25 V)
- Internal current and thermal limit
- Only 10 μF for stability
- Available in ± 2% (at 25°C) and 4% in full temperature range
- High supply voltage rejection: – 80 dB typ. (at 25°C)
- Temperature range: 0°C to 125°C
Products Specifications
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | |
| Manufacturer | ST | |
| Packaging | TO-252-2(DPAK) | |
| Output Voltage | 3.3V | |
| Number of Outputs | 1 | |
| Operating Temperature | 0℃~+125℃@(Tj) | |
| Supply Current (Iq) | 5mA | |
| Output Configuration | Positive | |
| Operating Voltage | 10V | |
| Output Current | 1A | |
| Features | Over Current Protection;Thermal shutdown | |
| Output Type | Fixed |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | |
| Manufacturer | ST | |
| Packaging | TO-252-2(DPAK) | |
| Output Voltage | 3.3V | |
| Number of Outputs | 1 | |
| Operating Temperature | 0℃~+125℃@(Tj) |
| Type | Description | |
|---|---|---|
| Supply Current (Iq) | 5mA | |
| Output Configuration | Positive | |
| Operating Voltage | 10V | |
| Output Current | 1A | |
| Features | Over Current Protection;Thermal shutdown | |
| Output Type | Fixed |
Introduction
The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available also in adjustable versions (V_REF = 1.25 V). In fixed versions, the following output voltages are offered: 1.2 V, 1.8 V, and 3.3 V. The device is supplied in: SOT - 223, DPAK and TO - 220. Surface mounted packages optimize the thermal characteristics while offering a relevant space saving advantage. High efficiency is assured by an NPN pass transistor. Only a very common 10 μF minimum capacitor is needed for stability. Chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25°C.
Features
- Low dropout voltage: – 1.15 V typ. (ΔI_OUT = 1 A, 25°C)
- Very low quiescent current: – 5 mA typ. (25°C)
- Output current up to 1 A
- Fixed output voltage of: – 1.2 V, 1.8 V, 3.3 V
- Adjustable version availability (V_REF = 1.25 V)
- Internal current and thermal limit
- Only 10 μF for stability
- Available in ± 2% (at 25°C) and 4% in full temperature range
- High supply voltage rejection: – 80 dB typ. (at 25°C)
- Temperature range: 0°C to 125°C
C157401 EasyEDA Library
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 Compliant |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | ROHS3 Compliant |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |



