ISL91108
ISL91108 is High Efficiency Buck-Boost Regulator manufactured by Renesas.
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- Accepts input voltages above or below regulated output voltage
- Automatic and seamless transitions between buck and boost modes
- Input voltage range: 1.8V to 5.5V
- Output current: up to 1.6A DC (PVIN = 2.8V, VOUT = 3.3V)
- Burst current: up to 2.7A (PVIN = 3V, VOUT = 3.3V, t ON
<600µs, t = 4.6ms)
- High efficiency: up to 95%
- 27.5µA quiescent current maximizes light load efficiency
- 2.6MHz switching frequency minimizes external ponent size
- Selectable forced PWM mode and external synchronization
- Fully protected for short-circuit, over-temperature, and undervoltage
- Small 2.34mm x 1.72mm WLCSP
Applications
- Smartphones and tablets
- Wireless munication devices
- 2G/3G/4G power amplifiers
GND PGND
EFFICIENCY (%)
VIN = 1.8V TO 5.5V
C1 2x10µF
ISL91108IINZ
PVIN
LX1
VIN MODE EN
LX2 VOUT
L1 1µH
VOUT = 3.3V
C2 2x22µF
FIGURE 1. TYPICAL FIXED OUTPUT...
