ap1635 Diodes, Inc., ap1635 Datasheet

Page 1

... Output voltage is set-up by the external resistors. (±2.5% accuracy). The 700KHz AP1635 that can work out with small value external components comes out more compact board. The device switches to and works under PFM mode with light loads ...

Page 2

... Device Code AP1635S S Note: 2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Block Diagram FB Vref with CE/SS CE AP1635 Rev. 3 PWM/PFM DUAL MODE STEP-DOWN DC/ Lead Free - Lead Free - Green Tube or Bulk Packaging Part Number ...

Page 3

... Fosc Oscillator Frequency Load=300mA, V MAXDTY Maximum Duty Ratio PFMDTY PFM Duty Ratio V CE/SS ”High” Voltage CEH V CE/SS ”Low” Voltage Same as V CEL EFFI Efficiency Rdson Rdson Condition AP1635 Rev. 3 PWM/PFM DUAL MODE STEP-DOWN DC/DC Ratings -0.3 ~ 5 Internal limited -25 ~ +80 -40 ~ +125 =25°C A Conditions V =2 ...

Page 4

... Vcc (V) Vcc vs. Stand-by Current 8 7.5 7 6.5 6 5.5 5 4.5 4 2.5 3 3.5 Vcc (V) Vcc vs. Current Limit 1.4 1.3 1.2 1.1 Current Limit 1 0.9 0.8 0.7 0.6 0.5 3 3.5 4 Vcc (V) AP1635 Rev. 3 PWM/PFM DUAL MODE STEP-DOWN DC/DC 200 180 160 140 120 100 4.5 5 2.5 800 780 760 740 720 700 680 660 640 620 600 4 4 ...

Page 5

... Typical Performance Characteristics (Continued) Line Regulation 0.3 0.2 0.1 0.0 -0.1 -0.2 -0.3 2.5 3 3.5 Vcc (V) Typical Application Circuit 2. Ω 20 68u 1M 0.1uF Marking Information Logo Part no. AP1635 Rev. 3 PWM/PFM DUAL MODE STEP-DOWN DC/ 4 PVcc B240A AP1635 SVcc FB CE/SS GND Ω 1nF R2 × Vout = R1=100K ~ 200K ...

Page 6

... Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP1635 Rev. 3 PWM/PFM DUAL MODE STEP-DOWN DC/DC Gauge Plane Seating Plane 0 ...