R2A20121SP Ver la hoja de datos (PDF) - Renesas Electronics
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R2A20121SP Datasheet PDF : 28 Pages
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R2A20121SP
Electrical Characteristics
(Ta = 25°C, Vcc = 12 V, RT = 33 kΩ, Rdelay = 51 kΩ, unless otherwise specified.)
Item
Symbol
Min
Typ
Max
Unit
Test Conditions
SUPPLY
Start threshold
VH
7.7
8.4
9.1
V
Shutdown threshold
VL
7.4
8.0
8.6
V
UVLO hysteresis
dVUVL
0.3
0.4
0.5
V
Start-up current
Is
—
90
150
µA Vcc = 7.5 V
Operating current
Icc
—
7
10
mA No load on VREF pin
VREF
Output voltage
Vref
4.9
5.0
5.1
V
Line regulation
Vref-line
—
0
10
mV Vcc = 10 V to 16 V
OSCILLATOR
Load regulation
Temperature stability
Oscillator frequency
Vref-load
dVref/dTa
fosc
—
6
20
mV Iref = –1 mA to –20 mA
—
±80 *1
—
ppm/°C Ta = –40 to 105°C
—
960 *1
—
kHz
Switching frequency
fsw
412
480
547
kHz Measured on OUT-A, -B
Line stability
Temperature stability
fsw-line
dfsw/dTa
–1.5
0
1.5
% Vcc = 10 V to 16 V
—
±0.1 *1
—
%/°C Ta = –40 to 105°C
RT voltage
VRT
2.5
2.7
2.9
V
SYNC
Input threshold
VTH-SYNC
2.5
2.85
3.2
V
Output high
VOH-SYNC
3.5
4.0
—
V
RSYNC = 33 kΩ to GND
Output low
VOL-SYNC
—
0.05
0.15
V
RSYNC = 33kΩ to VREF
Minimum input pulse
TI-MIN
50
—
—
ns
Output pulse width
TO-SYNC
—
500
—
ns
Note: 1. Reference values for design. Not 100% tested in production.
REJ03D0914-0100 Rev.1.00 Sep 29, 2008
Page 5 of 27
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