SGM62117
SGM62117 is High-Efficiency Buck-Boost Converter manufactured by SG Micro.
DESCRIPTION
The SGM62117 is a synchronous 4-switch Buck-Boost converter which is suitable for battery operated applications. The device’s programmable light load PFM mode and low quiescent current (18μA, TYP) offer above 90% efficiency in the 10m A to 2A output current range. The output voltage is programmable via external feedback resistor divider.
The SGM62117 can operate in Buck, Boost or a novel 4-cycle Buck-Boost mode when the input voltage is close to or equal to the output voltage. The device implements pre-defined mode transition thresholds to avoid undesired toggling within modes to reduce output voltage ripple.
The SGM62117 offers various protection features to improve device robustness such as over-temperature, input over-voltage and output over-current protections. These features can protect the device against unexpected system failure.
The SGM62117 is available in a small Green TDFN-3×2-10L package. High integration provides a pact solution with only six external ponents.
TYPICAL APPLICATION
0.47μH
VIN = 2.5V to 5.5V 10μF
SW1
SW2
VOUT
EN FB
MODE PGND
AGND
VOUT = 3.3V 22μF
FEATURES
- 2.2V to 5.5V Input Voltage Range
- 1.8V to 5.2V Output Voltage Range (Adjustable)
- 2A Output Current for VIN ≥ 2.5V and VOUT = 3.3V
- Above 90% Efficiency for IOUT from 10m A to 2A
- High Efficiency over the Entire Load Range
- 18μA (TYP) Quiescent Current
- Programmable Forced PWM Mode and Pulse
Frequency Modulation Mode
- Real Buck, Boost and Buck-Boost Modes
- Power Good
- Internal Soft-Start
- Start-up into Pre-Biased Outputs
- Forward and Reverse Current Operation and
Current Limit
- OTP, Input OVP and Output OCP Protections
- True Shutdown Function with Load Disconnect
- Available in a Green TDFN-3×2-10L Package
APPLICATIONS
System Pre-Regulator Point-of-Load Regulation Thermoelectric Devices Battery Backup Voltage Stabilizer and Converter
Figure 1. Typical Application Circuit
SG Micro Corp .sg-micro.
AUGUST...
