Nisshinbo Micro Device Inc. RP402

Description

The RP402 Series are min. 0.6V input, CMOS-based PWM/VFM step-up DC/DC converters with synchronous rectifier. The RP402 have three switching control types, or PWM control, forced PWM control, and PWM/VFM auto change control. The RP402 includes a soft start circuit, a bypass switch, shutdown switch, an anti-ringing switch. By simply using with an inductor, a capacitor, and resistors (for output voltage adjustable type) as external components, a high-efficiency step-up DC/DC converter can be realized. The output voltage can be selected from the internally fixed type or externally adjustment is possible. In addition to SOT-23-5 package, a 2.0mm square DFN(PLP)2020-8 package is available. The RP402 are ideal for the applications powered by one-cell or two-cell alkaline, nickel-metal-hydride (NiMH) or one-cell Lithium-ion (Li+) batteries.

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)
• Output Voltage Range: Fixed Output Voltage Type: 1.8 V to 5.5 V, 0.1 V step Adjustable Output Voltage Type: 1.8 V to 5.5 V (recommended)
• OVLO Detector Threshold: Typ. 5.1 V
• OVP Detector Threshold: Typ. 6.0 V
• LX Peak Current Limit: Typ. 1.5 A
• Latch Protection Delay Time: Typ. 3.3 ms (RP402Kxx1x, RP402Nxx1x) Typ. 4.1 ms (RP402Kxx2x)
• Soft-start Time: Typ. 0.5 ms
• EMI Suppression (Built-in Anti-ringing Switch) (RP402Kxx1x, RP402Nxx1x)
• Voltage Regulation at VIN > VOUT
• Zero Input Complete Shutdown at VIN = 0 V
• Input-to-Output Bypass Shutdown Option at CE = L (RP402xxxxC/ D/ G/ H)
• Ceramic Capacitor Capable
• Package: DFN(PLP)2020-8, SOT23-5

Typical applications

• MP3 Players, PDA, Digital Still Cameras, LCD Bias Supplies, GPS, USB-OTG, HDMI
• Portable Blood Pressure Meter, Wireless Handset

More information

• Datasheet
• IC product information