R2A20134ASP

R03DS0067EJ0301 Rev.3.01

Page 6 of 13

Jan 08, 2016

Electrical Characteristics (cont.)

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

Ω)

Item

Symbol

Min

Typ

Max

Unit

Test Conditions

OUT

Rise time

tr-out

—

30

100

ns

CL = 1000 pF,

FB = 0.3 V, COMP = 2.5 V

Fall time

tf-out

—

30

100

ns

CL = 1000 pF,

FB = 0.3 V, COMP = 2.5 V

OUT low voltage

Vol1-out

—

0.08

0.20

V

Isink = 20 mA

Vol2-out

—

0.05

0.70

V

Isink = 10 mA, VCC = 5 V

OUT high voltage

Voh-out

14.5

14.8

—

V

OUT frequency

fout

43

48

53

kHz

RT-Vref: 200 k

Maximum duty cycle

Dmax

47

52

57

%

RT-Vref: 200 k

Ω

Over

current

protection

OCP threshold voltage

Vocp

0.57

0.6

0.63

V

OCP blanking time

tblank

170

300

450

ns

Input bias current

Ics

–30

–15

–7.5

μA

Vcs = 0 mV

2nd over

current

and over

voltage

protection

2nd OCP threshold

voltage

V2ndocp

2.25

2.5

2.75

V

Thermal

shut

down

Shut down temperature

TSD_ON

140

155

170

°C

*1

TSD release

temperature

TSD_OFF

90

110

130

°C

*1

Notes: 1. Design spec.

3. The fout is adjusted by changing resistance of Rrt connected between RT-VREF terminals.

Reference data and a calculating formula are shown as follows.

0

50

100

150

200

250

0

1020304050

fout (Reference data)

fout (Calculation)

* The graph is for reference only and does not guarantee actual

characteristic.

Irt [

μA]

fout [kHz] =

1

(100

VREF

RT

Pin 3

Pin 4

Rrt