Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
| LTC3830-1ES8 | SO | 8 | E | $3.61 | $3.05 | View |
| LTC3830-1ES8#PBF | SO | 8 | E | $3.61 | $3.05 | View |
| LTC3830-1ES8#TR | SO | 8 | E | $3.11 | View | |
| LTC3830-1ES8#TRPBF | SO | 8 | E | $3.11 | View | |
| LTC3830EGN | SSOP | 16 | E | $4.50 | $3.80 | View |
| LTC3830EGN#PBF | SSOP | 16 | E | $4.50 | $3.80 | View |
| LTC3830EGN#TR | SSOP | 16 | E | $3.86 | View | |
| LTC3830EGN#TRPBF | SSOP | 16 | E | $3.86 | View | |
| LTC3830ES | SO | 16 | E | $4.14 | $3.50 | View |
| LTC3830ES#PBF | SO | 16 | E | $4.14 | $3.50 | View |
| LTC3830ES#TR | SO | 16 | E | $3.56 | View | |
| LTC3830ES#TRPBF | SO | 16 | E | $3.56 | View | |
| LTC3830ES8 | SO | 8 | E | $3.61 | $3.05 | View |
| LTC3830ES8#PBF | SO | 8 | E | $3.61 | $3.05 | View |
| LTC3830ES8#TR | SO | 8 | E | $3.11 | View | |
| LTC3830ES8#TRPBF | SO | 8 | E | $3.11 | View |
Description
The LTC3830/LTC3830-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 1.xV-3.xV step-down applications. A precision internal reference and feedback system provide ±1% output regulation over temperature, load current and line voltage variations. The LTC3830/LTC3830-1 use a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor.
The LTC3830/LTC3830-1 operate with an input supply voltage as low as 3V and with a maximum duty cycle of >91% over temperature. They include a fixed frequency PWM oscillator for low output ripple operation. The 200kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3830 supply current drops to <10µA. The LTC3830-1 differs from the LTC3830 S8 version by replacing shutdown with a soft-start function.
For a similar, pin compatible DC/DC converter with an output voltage as low as 0.6V, please refer to the LTC3832.
Features
- High Power Switching Regulator Controller for 3.3V-5V to 1.xV-3.xV Step-Down Applications
- No Current Sense Resistor Required
- Low Input Supply Voltage Range: 3V to 8V
- Maximum Duty Cycle >91% Over Temperature
- All N-Channel External MOSFETs
- Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations
- High Efficiency: Over 95% Possible
- Adjustable or Fixed 3.3V Output (16-Pin Version)
- Programmable Fixed Frequency Operation: 100kHz to 500kHz
- External Clock Synchronization
- Soft-Start (16-Pin Version and LTC3830-1)
- Low Shutdown Current: <10µA
- Overtemperature Protection
- Available in S8, S16 and SSOP-16 Packages
Typical Application
Packaging
SO-8, SSOP-16
