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BA9785FS

Rohm
Part Number BA9785FS
Manufacturer Rohm
Description transformer inverter control IC
Published Jan 29, 2014
Detailed Description BA9785FS IC IC BA9785FS BA9785FS LSI z LCD PDA LCD TV z 1) 2) 3) 2 z (Ta=25°C) Parameter Symbol VCC Pd Topr Tstg...
Datasheet PDF File BA9785FS PDF File

BA9785FS
BA9785FS

Overview
BA9785FS IC IC BA9785FS BA9785FS LSI z LCD PDA LCD TV z 1) 2) 3) 2 z (Ta=25°C) Parameter Symbol VCC Pd Topr Tstg Limits 17 800 ∗ −30∼+85 −55∼+150 6.
4mW Unit V mW ˚C ˚C ∗Ta=25˚C 1˚C z (Ta=25°C) Parameter Symbol VCC fOSCH fOSCL CL1 C L2 Min.
4.
5 60 50 0 0 Typ.
12 100 150 500 500 Max.
16 150 1000 1000 1000 Unit V kHz Hz pF Free Datasheet http://www.
datasheet4u.
com/ BA9785FS IC z ON / OFF 1 3.
5V Reg 2.
0V Ref 24 VREG GND1 2 Detection circuit + − Activation circuit 23 VREF I_CFL 3 22 HOSC_R DET_CR 4 1 VCO − 21 HOSC_C LOOP_C 5 Smoothing filter C_DELAY 6 + − LOSC_C 7 LOSC_R 8 Triangular wave oscillator 150Hz BAT_AC 9 BAT_R 10 + − + − Divider BRIGHT_VR 11 HV_PRO 12 + 20 PRI_INT 19 PRI_CR 18 PRI_IN 17 VCC 16 PCH_GATE 15 GND2 14 NCH_GATE1 13 NCH_GATE2 Free Datasheet http://www.
datasheet4u.
com/ BA9785FS IC z Pin No.
1 Pin name ON/OFF High.
.
.
Description Equivalent circuit VCC VREG ON/OFF 1 1k 110k 120k PCH_GATE 100k 100k GND1 2 3 4 GND1 I_CFL DET_CR GND 5 LOOP_C 0.
5V 2.
0V 0.
5V 2.
0V 0.
5V VREG VREF VREF 60µA I_CFL 3 30k 5k 20k VCC VCO 60k 3µA 3µA 60k 20k 500 VCC VCC GND1 4 DET_CR 5 LOOP_C Free Datasheet http://www.
datasheet4u.
com/ BA9785FS IC Pin No.
6 Pin name C_DELAY 3µA LOOP_C Description Equivalent circuit VREG GND1 VCC 6 C_DELAY 7 8 LOSC_C 1 LOSC_R 2 47kΩ 11 BRIGHT_VR DUTY DUTY 11PIN VCC VREG 30k ×3 VREF 60k 90k 30k ×3 10k 10k VCC 2.
22k ×4.
5 20k 30k ×3 10k 10k PCH_GATE LOOP_C GND1 VCC VCC 1.
3V BRIGHT_VR 11 LOSC_C 7 8 LOSC_R Free Datasheet http://www.
datasheet4u.
com/ BA9785FS IC Pin No.
9 Pin name BAT_AC High.
.
.
10PIN 10 BAT_R Description Equivalent circuit VREG BAT_AC 9 BAT_R 1k 110k 10 100k GND1 12 HV_PRO LOOP_C Low VREG VREF HV_PRO 12 VCC LOOP_C Low GND1 13 14 NCH_GATE2 NCH_GATE1 Nch-MOS Nch-MOS 13PIN 14PIN 1/2 DUTY=50% 2 VCC 1 VCO VCC N_GATE2(1) 13 (14) Q 1/2 Q GND2 Q 15 GND2 GND Free Datasheet http://www.
datasheet4u.
com/ BA9785FS IC ...


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