RP402K001B-TR Description
The RP402K001B-TR is a high efficiency step-up DC/DC converter with synchronous rectifier. The device can start up with low voltage of typically 0.7 V which is ideal for the applications powered by either one-cell or two-cell alkaline, nickel-metal-hydride (NiMH) or one-cell Lithium-ion (Li+) batteries. Internally, the RP402K001B-TR consists of an oscillator, a reference voltage unit with soft start, a chip enable circuit, an error amplifier, phase compensation circuits, a slope circuit, a PWM control circuit, a start-up circuit, a PWM/VFM mode control circuit, internal switches and protection circuits.
RP402K001B-TR Features
Low Voltage Start-up: Typ. 0.7 V
Input Voltage Range: Fixed Output Voltage Type: 0.6 V to 4.8 V
Adjustable Output Voltage Type: 0.6 V to 4.6 V
High Efficiency: 94% (100 mA/ 5.0 V, VIN = 3.6 V, 25°C)
90% (1 mA/ 5.0 V, VIN = 3.6 V, 25°C)
Output Current: 800 mA: VIN = 3.6 V, VOUT = 5.0 V
LX Driver ON Resistance: NMOS/ PMOS: 0.20 Ω (VOUT = 5.0 V, 25°C)
PWM Oscillator Frequency: 1.2 MHz (Normal PWM), 1.0 MHz (Forced PWM)
RP402K001B-TR Applications
MP3 Players, PDA
Digital Still Cameras
LCD Bias Supplies
Portable Blood Pressure Meter
Wireless Handset
GPS
USB-OTG
HDMI
