S-8533A125FT-TB-X Datasheet, PDF (16/33 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER
S-8533 Series
Rev.3.0_01
 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
I_SS1
(μA)
50
40
30
20
10
0
2
360
Ta = 25°C
340
Ta = −40°C
Ta = 85°C
320
f_OSC
(kHz)
300
280
260
4
6
8
10
12
14
16
V_IN (V)
240
2
Ta = 85°C
Ta = −40°C
Ta = 25°C
4
6
8
10
12
14
16
V_IN (V)
(3) PDRV Pin Output Current “H” (IPDRVH) vs.
Input Voltage (VIN)
70
(4) PDRV Pin Output Current “L” (IPDRVL) vs.
Input Voltage (VIN)
70
60
50
I_PDRVH 40
(mA)
30
20
10
Ta = −40°C
Ta = 25°C
Ta = 85°C
60
50
I_PDRVL 40
(mA)
30
20
10
Ta = −40°C
Ta = 25°C
Ta = 85°C
0
2
4
6
8
10
12
14
16
V_IN (V)
0
2
4
6
8
10
12
14
16
V_IN (V)
(5) NDRV Pin Output Current “H” (INDRVH) vs.
Input Voltage (VIN)
70
(6) NDRV Pin Output Current “L” (INDRVL) vs.
Input Voltage (VIN)
120
60
50
I_NDRVH 40
(mA)
30
20
Ta = −40°C
100
80
I_NDRVL
(mA) ₆₀
40
Ta = −40°C
Ta = 25°C
10
Ta = 25°C
Ta = 85°C
0
2
4
6
8
10
12
14
16
V_IN (V)
20
Ta = 85°C
0
2
4
6
8
10
12
14
16
V_IN (V)
(7) ON/OFF Pin Input Voltage “H” (VSH) vs.
Input Voltage (VIN)
(8) ON/OFF Pin Input Voltage “L” (VSL) vs.
Input Voltage (VIN)
1.8
1.7
1.6
1.4
1.2
V_{SH 1.0}
(V)
0.8
0.6
0.4
0.2
Ta = −40°C
Ta = 25°C
Ta = 85°C
1.5
1.3
V_SL 1.1
(V)
0.9
0.7
0.5
Ta = −40°C
Ta = 25°C
Ta = 85°C
0
2
4
6
8
10
12
14
16
V_IN (V)
0.3
2
4
6
8
10
12
14
16
V_IN (V)
16