SGM660
SGM660 is Buck-Boost Converter manufactured by SG Micro.
DESCRIPTION
The SGM660 is a synchronous inverting Buck-Boost converter. The device implements a multi-function digital input SWIRE pin which can be used to program the negative output voltage or device enable.
The SGM660 integrates a 810m A switch current power FET, which can be programmable down to 435m A. 1.8MHz switching frequency allows the use of small size inductor. The device has built-in soft-start and loop pensation network to reduce the external ponent counts. Output discharge function is also implemented.
Various protection features such as over-current protection, over-temperature protection and short circuit protection are implemented to protect the device against various fault conditions.
The SGM660 is available in a Green WLCSP-0.9×1.3-6B package.
FEATURES
- Input Voltage Range: 2.8V to 5.5V
- Adjustable Output Voltage:
-0.8V to -5.2V, 0.1V/Step
- Programmable Switching Current Limit:
810m A (Default)/620m A/435m A
- Programmable Switching Frequency:
1.8MHz/1.6MHz (Default)/1.4MHz
- Internal Soft-Start Function
- No External pensation
- Shutdown Current: 1μA (MAX)
- Available in a Green WLCSP-0.9×1.3-6B Package
APPLICATIONS
Sensor and Modulator Bias Negative Bias Supply for Amplifiers and Data Converters Discrete LCD Biasing
TYPICAL APPLICATION
L 4.7μH
Input 2.8V to 5.5V
CIN 10μF
Enable VOUT Program Device
VOUT
SWIRE
COUT 10μF
Output -0.8V to -5.2V
Figure 1. Typical Application Circuit
SG Micro Corp .sg-micro.
MAY 2022
- REV. A 1
Buck-Boost Converter for Negative Output Voltage
PACKAGE/ORDERING INFORMATION
MODEL SGM660
PACKAGE DESCRIPTION
WLCSP-0.9×1.3-6B...
