| Vin (Min) (V) | 3 |
| Vin (Max) (V) | 18 |
| Vout (Min) (V) | 3 |
| Vout (Max) (V) | 38 |
| Switch current limit (Typ) (A) | 1.2 |
| Regulated outputs (#) | 1 |
| Switching frequency (Min) (kHz) | 1000 |
| Switching frequency (Max) (kHz) | 1200 |
| Iq (Typ) (mA) | 2.3 |
| Features | Enable, Light Load Efficiency |
| Duty cycle (Max) (%) | 93 |
| Rating | Catalog |
- 3-V to 18-V Input Voltage Range
- High Output Voltage: Up to 38 V
- 1.2-A Integrated Switch
- 1.2-MHz Fixed Switching Frequency
- 12 V at 300 mA and 24 V at 150 mA From
5-V Input (Typical) - Up to 93% Efficiency
- Output Voltage Reprogramming
- Skip-Switching Cycle for Output
Regulation at Light Load - Built-in Soft Start
- 6-Pin, 2-mm × 2-mm QFN Package
The TPS61170 is a monolithic, high-voltage switching regulator with integrated 1.2-A, 40-V power MOSFET. The device can be configured in several standard switching-regulator topologies, including boost and SEPIC. The device has a wide input-voltage range to support applications with input voltage from multicell batteries or regulated 5-V, 12-V power rails.
The TPS61170 operates at a 1.2-MHz switching frequency, allowing the use of low-profile inductors and low-value ceramic input and output capacitors. External loop compensation components give the user flexibility to optimize loop compensation and transient response. The device has built-in protection features, such as pulse-by-pulse overcurrent limit, soft start, and thermal shutdown.
The FB pin regulates to a reference voltage of 1.229 V. The reference voltage can be lowered using a 1-wire digital interface (Easyscale? protocol) through the CTRL pin. Alternatively, a pulse width-modulation (PWM) signal can be applied to the CTRL pin. The duty cycle of the signal reduces the feedback reference voltage proportionally.
The TPS61170 is available in a 6-pin 2-mm × 2-mm QFN package, allowing a compact power-supply solution.
