STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
Rev.2.3_00
S-8533 Series
Characteristics (Typical Data)
1. Examples of Major Characteristics
(1) Current Consumption 1 (ISS1) vs. Input Voltage (VIN) (2) Oscillation Frequency (fOSC) vs. Input Voltage (VIN)
100
90
80
70
60
50
40
30
20
10
0
360
340
320
300
280
260
240
Ta = 25°C
Ta = 85°C
ISS1
(μA)
fOSC
(kHz)
Ta = 85°C
Ta = −40°C
Ta = 25°C
Ta = −40°C
2
4
6
8
10
12
14
16
16
16
16
2
4
6
8
10
12
14
16
16
16
16
VIN (V)
VIN (V)
(3) PDRV Pin Output Current “H” (IPDRVH) vs.
(4) PDRV Pin Output Current “L” (IPDRVL) vs.
Input Voltage (VIN)
Input Voltage (VIN)
70
70
60
60
Ta = −40°C
50
50
Ta = −40°C
IPDRVH
(mA)
IPDRVL
(mA)
40
30
20
10
0
40
30
20
10
0
Ta = 25°C
Ta = 25°C
Ta = 85°C
Ta = 85°C
2
4
6
8
10
12
14
2
4
6
8
10
12
14
VIN (V)
VIN (V)
(5) NDRV Pin Output Current “H” (INDRVH) vs.
(6) NDRV Pin Output Current “L” (INDRVL) vs.
Input Voltage (VIN)
Input Voltage (VIN)
70
120
60
100
Ta = −40°C
50
80
Ta = −40°C
INDRVH
(mA)
INDRVL
(mA)
40
30
20
10
0
60
40
20
0
Ta = 25°C
Ta = 85°C
Ta = 25°C
Ta = 85°C
2
4
6
8
10
12
14
2
4
6
8
10
12
14
VIN (V)
VIN (V)
(7) ON/OFF Pin Input Voltage “H” (VSH) vs.
(8) ON/OFF Pin Input Voltage “L” (VSL) vs.
Input Voltage (VIN)
Input Voltage (VIN)
1.7
1.8
1.6
1.5
1.3
1.4
Ta = −40°C
1.2
VSH
1.0
VSL
(V)
1.1
0.9
0.7
0.5
0.3
(V)
Ta = −40°C
Ta = 25°C
0.8
Ta = 85°C
0.6
0.4
0.2
0
Ta = 25°C
Ta = 85°C
2
4
6
8
10
12
14
2
4
6
8
10
12
14
VIN (V)
VIN (V)
Seiko Instruments Inc.
15
SII [ SEIKO INSTRUMENTS INC ]
