33730 datasheet(21/27 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33730

TYPICAL APPLICATIONS

OPERATIONAL MODES

TYPICAL APPLICATIONS

Figure 8. 33730 Typical Application Circuit

Programming Output Voltage (BOLD denotes selected combinations)

VDD3

VDDL

VKAM

High

3.3V

2.6V

High

Low

3.3V

High

Low

High

3.3V

1.5V

1.0V

High

Low

3.3V

1.0V

Low

High

3.3V Standby

3.3V

1.0V

Low

High

Low

2.0

3.15V

5.0V

Low

High

2.6V Standby

3.3V

1.0V

Low

2.6V Standby

3.3V

1.5V

Standby

Control

VKAM

15 mA,ILim,

TLim

Feed

Forward

Ramp

Generator

Buck

Control Logic

Osc illator

HS Drive,

Level

Shifter

BOOT

VBG

INV

VCOMP

VDDH

VREF1

HRT

KA_VBAT

VBAT

VKAM

RSTH

RSTKAM

GND

Band-Gap

Reference

VBG

HR Timer

VDDL

ILim

VREF2

FREQ

VDDL_B

VDDH

Reset Detect

VDD3_B

VDD3

VBAT

5.0 V,

ILim=150 mA

26.5V,-1V,TLim

T-lim

Ref. Voltage

Programming

Block

Protection

FET

Drive

PFD

UVLO

/OVLO

VDDH =5.0V

@ 2000mA total

Battery

VKAM,VDDL,VDD3,

VDD3_SBY

Ref. Voltage

Charge

Pump

5.0 V,

ILim=150 mA

26.5V,-1V,TLim

VDD3

ILim,TLim

RSTL

VDDL

Optional

Protection FET

VDD3

Reset Detect

RST3

VKAM

Reset Detect

VDDL

Reset Detect

VIGN

REGON

IGN_ON

Enable

22uH

SS26

100uF

20k

5.0k

430R

1.5nF

56pF

20k

2.2nF

10nF

100nF

1.0uF

4.7uF

10uF

5.1k

3.3uH

100uF

1.0uF

10nF

5.1k

10nF

Feedback Compens ation Network

10nF

VDD3_SBY

ILim,TLim

10nF

1.5 V

3.3 V

5.0 V

1.0 V

1.5R

1.0uF

1.5R

RHRT

RFreq

Notes

11.

The VDDH total current includes the sum of all output currents of the IC.

Recommended Q1, Q2:

BCP68T1 (SOT-223)

NJD2873T4 (DPAK)

MJB44H11 (D2PAK)

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