AS2916 Princeton Technology Corp., AS2916 Datasheet

Page 1

...

Page 2

... AS2916 Functional Block Diagram V REG BOK 2V5 – – 2V5 SNSB CMPB 1V WBL OSC RT/CT RAMP x1 gm CMPA SNSA www.ptcc.com.tw (Bulk OK • AUX_ON (RUN) CM PWM 2R + – – SS PWM OSC V CC AUX_ON – PWM R 250 PWM Controller enable 5V Reg REG + – UVLO ...

Page 3

... µA current is sourced from the pin for hys- teresis. When the pin drops below 2.5 V the hysteresis is turned off and SS is pulled low,inhibiting the main output. The Auxiliary output is not tied to BOK and will run as long as there is sufficient bias voltage. 251 AS2916 resistor to limit the FET ...

Page 4

... AS2916 Pin Function Description Pin Number Function 12 CMPA is 13 SNSA 14 OUTA 15 GND 16 PGND Absolute Maximum Ratings Parameter Reference Current Output Current Supply Voltage Output Voltage Continuous Power Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 seconds) www.ptcc.com.tw Description This is the Auxiliary convertor error amplifier compensation pin or if secondary controller is desired, the Auxiliary control input pin ...

Page 5

... 25°C VREG = 4 25°C, V WBL = 18V T MIN MAX V OSC peak-to-peak V WBL = WBL = OSC = 680 , nF 25°C 2.2 nF WBL to GND Change in main oscillator freq. V WBL peak-to-peak V WBL = 0 WBL = 4.8 V 253 AS2916 Min. Typ. Max. Unit 4.90 5.00 5. 0.2 0.4 mV/°C 4 ...

Page 6

... AS2916 Electrical Characteristics Electrical characteristics are guaranteed over the full junction temperature range (0-105°). Ambient temperature must be derated based upon power dissipation and package thermal characteristics. The conditions are BOK = 680 , nF, and C WBL = 2.2 nF, unless otherwise specified. To override UVLO should be raised above UVLO HIGH prior to test ...

Page 7

... I SOURCE = 150 mA 15V 1.3 nF, 10 1.3 nF, 90% to 10% VCC = SINK = SINK = 150 mA I SOURCE = 10 mA 15V, V CMPA = SOURCE = 110 mA 15V, V CMPA = =350 pF, 10 350 pF, 90 25°C V BOK = 2 2.3 V 255 AS2916 Min. Typ. Max. Unit 0.1 0.4 V 1 ...

Page 8

www.ptcc.com.tw 256 ...