高电压大电流DC-DC升压IC-Di3037

1

V OUT = V FB x (1+R1/R2) , V FB = 1.0V, R2= 1K~3K Note1. C4 capacitor ESR suggest 30m ~ 100m Ө

Note2. When Vin voltage under 4V, must to separate the Vin & Vcc input voltage then Vout will be assured

ABSOLUTE MAXIMUM RATINGS

VCC Pin Voltage (V CC ) ----------------------------------- V SS - 0.3V to V SS + 26V Feedback Pin Voltage(V FB ) ------------------------------ V SS - 0.3V to 12V EN Voltage (V EN ) ------------------------------------------- V SS - 0.3V to V CC SENSE Voltage (V SENSE ) --------------------------------- V SS - 0.3V to V CC SS Pin Voltage (V SS ) -------------------------------------- V SS - 0.3V to V CC Gate Pin Voltage (V GATE ) --------------------------------- V SS - 0.3V to V CC Power Dissipation (P D ) ----------------------------------- Internally limited Storage Temperature Range (T ST ) -------------------- -40 to +150°C Operating Junction Temperature Range (T OPJ ) --- -20 to +125°C Operating Supply Voltage (V OP ) ------------------------ +3V to +24V Thermal Resistance from Junction to Case(Rth JC ) 40°C/W 120°C/W

Note. Rth JA is measured with the PCB copper area of approximately 1 in 2 (Multi-layer).

ELECTRICAL SPECIFICATIONS

(V IN =5V, V OUT =12V, T A =25o C, unless otherwise specified)Parameter SYM TEST CONDITION

MIN TYP MAX UNITS Feedback Voltage V FB I OUT =0.1A

0.9751 1.025V Quiescent Current I CCQ V FB =1.5V force driver off -46mA Feedback Bias Current I FB I OUT =0.1A -0.10.5uA Shutdown Supply Current I SD V EN =0V -110uA Oscillation Frequency F OSC SW pin

400500600KHz Sense Voltage V SENSE 0.050.060.07V Soft Start Current

I SS V SS =0V

-8-uA V SH High (regulator ON)2--V SL Low (regulator OFF)--0.8I SH V EN =2.5V (ON)-20-uA I SL V EN =0.3V (OFF)--1-uA LX Rise Time T LXR C LX =1000pF -60-LX Fall Time T LXF C LX =1000pF

-60-Efficiency

EFFI V CC =5V, V OUT =12V, I OUT =1A -91-%Maximum Duty Cycle DC MAX V FB =0V -85-Minimum Duty Cycle DC MIN V FB =1.5V

-0-Thermal Shutdown Temp

T SD

-145

-o

C

2Thermal Resistance from Junction to Ambient(Rth JA )ns EN Pin Input Current EN Pin Logic Input Threshold Voltage

V %

PIN DESCRIPTIONS

PIN SYMBOL

PIN DESCRIPITON SS Soft-Start pin

I-S Current Limit Sense Voltage

DRV Gate drive for external N-channel MOSFET.VCC GND FB H : Normal operation NC

BLOCK DIAGRAM

EN 3VCC supply pin Ground Pin Feedback Pin L : Shutdown No connection

Shutdown Pin

FB

GND

DRV

EN

5