BP5811_10

Data Sheet 0 to 19V/300mA Output Broad output DC/DC Converter(Non-isolated) BP5811 Absolute Maximum Ratings Parameter Motor driving supply voltage CTL input voltage Maximum output current Operating temperature range Storage temperature range Maximum surface temperature Symbol VMin VCTL Iopeak Topr Tstg Tcmax Dimensions (Unit : mm) Limits 25 0.3 to 5.5 300 Unit V V mA °C °C °C 100 Recommended Action Conditions Parameter Symbol Motor driving supply voltage VMIN CTL input voltage Vctl CTL input frequency fctl Min. 19.0 0 1 Typ. 20.0 50 Derating Curve Output Current Io(mA) Max. 21.0 5.0 100 Unit V V kHz Conditions IO=300mA Derating Curve 350 300 250 200 150 100 50 0 Vctl=5V Vctl=4V Vctl=3V Vctl=2V Vctl=1V -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Electrical Characteristics (Unless otherwise specified,VMIN=20V, IO=300mA. VCTL=5.0V, Ta=25°C) Symbol Min. Parameter Typ. Max. Unit V 18.0 20.0 19.0 V Output voltage 14.3 15.9 Vo 15.1 V 6.76 7.94 7.35 mA Output current 300 Io Vp-p Output ripple 0.15 VP 0.05 % Power conversion e fficiency 88 93 Ambient Temperature Ta(˚C) Conditions Output Voltage Control Characteristics (Ta=25°C) VO-VCTL Characteristics (VMin=20V) Output Voltage Vo (V) 20 15 10 5 0 0 1 2 3 4 5 Control Voltage (DC) VCTL(V) Application Circuit Output Voltage Vo (V) VO-Duty Characteristics (VMin=20V) 20 15 10 5 0 0 20 40 60 80 100 Control Duty fCTL=50kHz Duty(%) BP5811 1 2 3 6 7 8 9 L1 VMin C1 CTL Be sure to use fuse for safety. Vo C2 External Component Specifications FUSE: Fuse C1: Input smoothing capacitor C2: Output smoothing capacitor L1: Power inductor Use a quick-acting fuse (2.3A) 470 F/50V Low impedance Recommended part : PM series (Nichicon) 470 F/50V Low impedance Recommended part : PM series (Nichicon) 47 H, Rated current 1.2A or higher Recommended part : TSL0808-470K1R2 (TDK) Conversion Efficiency (%) Pin No. 1 2 3 4 5 6 7 8 9 Function Input terminal N.C. GND Skip Skip Coil connection terminal Coil connection terminal Control terminal Output voltage Conversion Efficiency (VMin=20V, VCTL=5V) 100 90 80 70 60 50 40 30 20 10 0 0 50 100 150 200 250 300 Output Current IO (mA) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/1 2010.03 - Rev. B