ml4865 Fairchild Semiconductor, ml4865 Datasheet
ml4865
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ml4865 Summary of contents
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... ML4865 High Voltage High Current Boost Regulator Features Block Diagram START-UP + BOOST – CONTROL SHDN General Description SYNCHRONOUS RECTIFIER CONTROL FEEDBACK + – 2.42V PWR GND 5 www.fairchildsemi.com SHDN SHUTDOWN 7 CONTROL V OUT + 8 – SENSE CONTROL 1 GND 2 REV. 1.0.2 8/10/01 ...
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... Peak Switch Current (I ) PEAK Average Switch Current (I ) AVG Junction Temperature Storage Temperature Range Lead Temperature (soldering, 10s) Thermal Resistance (θ Operating Conditions Parameter Temperature Range ML4865CS-2 V Voltage Range IN Without external rectifier With external rectifier 2 ML4865 8-Pin SOIC (S08) SENSE OUT GND ...
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... OUT OUT(MAX) 0V < V < OUT See Figure 5V, SENSE = Open OUT See Figure 2.4V 40mA IN OUT 160mA IN OUT V = HIGH to LOW SHDN ML4865 Min. Typ. Max. Units 10 25 µ µ µA 0.8 1.2 1.6 A 11.72 12.1 12.48 V 11.52 12.0 V 11.52 12.0 V 2.38 2.42 2.48 V -150 ...
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... 150mΩ Figure 2. PFM Regulator Detailed Block Diagram OUT Figure 3. Inductor Current and Voltage Waveforms 4 ML4865 SENSE V OUT GND SHDN PWR GND 27µH (Sumida CD75) Figure 1. Application Test Circuit ...
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... OUT MAX ( ) IN V OUT = × η ≅ IN × × + × OUT MAX ( ) IN V OUT = × η = × 025 . ML4865 (1) × × 025 . ...
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... Inductor Selection V OUT = 12V with Schottky without Schottky 100 1000 Output Capacitor OUT V PRODUCT SPECIFICATION ML4865 D1 MBR0520L SENSE V OUT GND SHDN PWR GND R1 1MΩ 22µH (Sumida CD75) Figure 7. Typical Application Circuit Ω × ...
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... PRODUCT SPECIFICATION Input Capacitor Ω Shutdown REV. 1.0.2 8/10/01 Sense × V 2.42 OUT Ω × OUT R1 R2 2.42 External Schottky Rectifier Layout Figure 8. Sample ML4865 Layout ML4865 + (3) (V) R2 Ω − (4) 1 (Ω) 7 ...
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... ML4865 Design Example V = 4.75 to 5.25V 12V OUT I = 150mA OUT(MAX) Shutdown required V ≅ × × OUT MAX ( ) IN V OUT ≅ × × . OUT MAX ( ) × OUT V × × 188 . mA PRODUCT SPECIFICATION 10 × ...
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... Mechanical Dimensions 8 1 0.017 - 0.027 (0.43 - 0.69) (4 PLACES) 0.012 - 0.020 0.055 - 0.061 (0.30 - 0.51) (1.40 - 1.55) REV. 1.0.2 8/10/01 inches (millimeters) Package: S08 8-Pin SOIC 0.189 - 0.199 (4.80 - 5.06) 0.148 - 0.158 0.228 - 0.244 PIN 1 ID (3.76 - 4.01) (5.79 - 6.20) 0.050 BSC (1.27 BSC) 0.059 - 0.069 (1.49 - 1.75) 0º - 8º 0.015 - 0.035 0.004 - 0.010 (0.38 - 0.89) (0.10 - 0.26) SEATING PLANE ML4865 0.006 - 0.010 (0.15 - 0.26) 9 ...
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... ML4865 Ordering Information Part Number Output Voltage ML4865CS-2 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; ...