R2A20134SP datasheet(5/11 Pages) RENESAS

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R2A20134SP

Preliminary

R03DS0033EJ0200 Rev.2.00

Page 5 of 10

Jun 03, 2011

Electrical Characteristics

(Ta = 25°C, VCC = 15 V, CS = 0 V, FB = COMP, RRT = 200 k

)

Item

Symbol

Min

Typ

Max

Unit

Test Conditions

UVLO turn-on threshold

Vuvlh

11.2

12.8

UVLO turn-off threshold

Vuvll

8.5

9.2

9.9

UVLO hysteresis

Hysuvl

2.1

2.8

3.5

Standby current

Istby

—

130

250

A

VCC = Vuvlh – 0.2 V

Supply

Operating current

Icc

—

2.2

3.3

Reference voltage

Vref

4.945

5.020

5.095

Isource = 0 mA

Temperature stability

dVref

—

80

—

ppm/°C

Tj = –40 to 150°C *

Line regulation

Vref-line

—

Isource = 0 mA

Vcc = 10 V to 24 V

VREF

Load regulation

Vref-load

—

Isource = 0 mA to –5 mA

Feedback voltage

Vfb

0.587

0.605

0.623

Input bias current

Ifb

–0.75

–0.25

–0.1

A

Measured pin: FB

Open loop gain

—

Upper clamp voltage

Vclamp_comp

3.85

4.10

4.30

FB = 0.3 V

COMP: Open

Low voltage

Vl-comp

—

0.1

0.3

FB = 0.9 V

COMP: Open

Source current

Isrc-comp

–13

–9.5

–6

A

FB = 0.3 V

COMP: 2.5 V

Sink current

Isnk-comp

9.5

A

FB = 0.9 V

COMP: 2.5 V

Error

amplifier

Transconductance

s

FB = 0.55 V

 0.65 V

COMP: 2.5 V

RAMP offset voltage

Voffset_ramp

—

1.0

—

RAMP amplitude

dVramp

2.9

3.1

3.3

RT voltage1

V-rt1

1.9

2.0

2.1

RT-GND: 200 k



RT voltage2

V-rt2

2.9

3.0

3.1

RT-Vref: 200 k



ZCD threshold voltage

Vzcd

Zero

current

detector

Input bias current

Ics

–85

–53

–25

A

Vcs = 13 mV

Restart

Restart time delay

Tstart

140

s

FB = 0.3 V, COMP = 2.5 V

Notes: *1 Design spec

*2 dVramp = Vclamp_comp – Voff_ramp

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