SY7070B
Description
The SY7070B is a high efficiency, synchronous, current hysteresis control; step-up boost converter designed for single-cell or dual-cell alkaline, Ni MH, or Ni Cd batterypowered applications. It can convert down to 0.7V input voltage. It adopts NMOS for the main switch and PMOS for the synchronous switch.
The SY7070B is available in a pact SOT23-5 package.
Features
- 0.7V Minimum Input Voltage
- Fixed Output Voltage:2.8V
- Low RDS(ON) (Main Switch/Synchronous Switch) at
Output: 0.5Ω/0.7Ω
- 5.5μA Typical Quiescent Current
- Typical 350m A Peak Current Limit
- Input Under-Voltage Lockout
- Bypass Function During Shutdown
- Moisture Sensitivity Level (MSL): 1
- pact Package SOT23-5
Applications
- Battery powered applications
- Consumer and portable medical products
- Personal care products
- Smartphones
- White or status LEDs
Typical Application
CIN 10μF
L 4.7μH
Enable Signal
VOUT
VOUT=2.8V
COUT 10μF
Figure 1. Schematic Diagram
Efficiency (%)
100...
