UBA20271 データシートの表示（PDF） - NXP Semiconductors.

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UBA20271

350 V and 600 V Power ICs for dimmable compact fluorescent lamps

NXP Semiconductors. 

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VDD

6

SUPPLY REFERENCE

VOLTAGES

5 V DIGITAL

5 V ANALOG

CP 13

VDD(stop)

RESET

PREHEAT/

5V

BOOST TIMER

CB 14

1 μA

6 μA

60 μA

SGND 15

TEMPERATURE

SENSOR

160° 120° 80°

DIVIDE BY 2

LOGIC

STATE LOGIC

BOOTSTRAP

DRIVER

LOGIC

LEVEL

SHIFTER

HS

driver GHS

LS

driver GLS

CAPACITIVE MODE DETECTOR

16 FS

18 DHS

17 HBO

19 HBO

20 HBO

1 SLS

2 SLS

3 SLS

RESET STATE

START-UP STATE

PREHEAT STATE

IGNITION STATE

HOLD STATE

BOOST STATE

BURN STATE

POWER-DOWN STATE

Vth(capm)SLS

PREHEAT CURRENT SENSOR

Vph(SLS)

INDUCTOR SATURATION/

OVERCURRENT DETECTOR

Vth(ocp)SLS

25 μA

IGNITION CURRENT DETECTOR

Vth(det)ign(CSI)

4 LSAT

5 PGND

REFERENCE

CURRENT

1.27 V

VOLTAGE

CONTROLLED OSCILLATOR

I

V

LOGIC

FREQUENCY

CONTROL

BOOST

AMPLIFIER

OTA

LAMP

CURRENT

SENSOR

DSR

Vclamp

VLD (CSI)

BOOST ENABLE

START ENABLE

Votp(CSI)

Vth(bst) Vth(start)

(DCI)

(DCI)

VT(hec1)

DCI

DCI

DIMMER

25 μA LEVEL SHIFT CONTROL

12 DCI

7

8

RREF

CF

Fig 1. Block diagram UBA20271/2

10

11

CI

CSI

9

MDL

001aam772

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