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FabricanteJiangsu Changjing Electronics Technology Co., Ltd.
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Peça do Fabricante #CJT1117B-3.3
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Ficha Técnica CJT1117B-3.3 DataSheet
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Especificações
| Atributo | Valor |
| Manufacturer | Jiangsu Changjing Electronics Technology Co., Ltd. |
| Package / Case | SOT-223-4 |
| Operating Temperature | -40℃~+125℃@(Tj) |
| Voltage - Supply | 20V |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Current - Output | 1000mA |
| Voltage Dropout | 1.3V |
| Power Supply Rejection Ratio (PSRR) | 75dB@(1kHz) |
| Features | Overcurrent Protection |
| Output Voltage | 3.3V |
| Output Configuration | Positive electrode |
| standby current | 10mA |
Visão Geral
Description
Key characteristics:
- Input voltage range: Up to 15V
- Output voltage: Fixed 3.3V (±2% accuracy)
- Low quiescent current: ~5mA
- Protections: Overcurrent and thermal shutdown
Commonly used in battery-powered devices, embedded systems, and consumer electronics, the CJT1117B-3.3 is a cost-effective, reliable solution for stable voltage regulation. It requires minimal external components (typically just input/output capacitors).
Package options include TO-220, SOT-223, and DPAK, offering flexibility for different PCB layouts.
For optimal performance, ensure proper heat dissipation at higher loads.
Pinout
1. Input (VIN) – Connects to the input voltage (up to 15V).
2. Ground (GND) – Reference for regulation.
3. Output (VOUT) – Provides a stable 3.3V output (up to 800mA current).
It features low dropout voltage (~1.2V at max load), thermal shutdown, and short-circuit protection. Commonly used in power supply circuits for stable 3.3V regulation.
Manufacturer
CJ specializes in analog and power management ICs, including LDO regulators, DC-DC converters, and voltage references. The company focuses on cost-effective solutions for consumer electronics, industrial applications, and IoT devices.
The CJT1117B-3.3 is a fixed-output variant of the popular AMS1117 series, offering similar performance with a 1A output current and low dropout voltage. CJ is known for producing compatible alternatives to established ICs, often at competitive prices.
For detailed specifications, refer to CJ’s official documentation or authorized distributors.
Application
1. Embedded Systems – Powering microcontrollers (e.g., STM32, ESP8266).
2. IoT Devices – Stable voltage for sensors and wireless modules.
3. Consumer Electronics – Routers, set-top boxes, and portable gadgets.
4. Industrial Control – Reliable power for PLCs and automation systems.
5. Battery-Powered Devices – Efficient voltage regulation in low-power applications.
Its low dropout, high accuracy, and thermal protection make it ideal for compact, energy-efficient designs.