Description
Voltage Regulators AN8049SH 1.8-volt 3-channel step-up, step-down, and polarity inverting DC-DC converter control IC Unit : mm s Overview The AN8049.
Pin No.
Features
* low-voltage operation. This IC can form a power supply that provides two stepup outputs and one step-down or polarity inverted output with a minimal number of external components. The AN8049SH features the ability to operate from a supply voltage as low as 1.8 V, and thus can be operated from two dr
Applications
* Electronic equipment that requires a power supply system
1
AN8049SH
s Block Diagram
CTL1 VREF OSC IN-1 DT1 VCC FB1
Voltage Regulators
23
24
7
4
17
16
1.1 µA
45 kΩ
Reference voltage supply VREF
9
Sawtooth wave generator
1.26 V (Allowance: ±1%)
Error amplifier 1 1.26 V S. C. P.