S-8533 Datasheet, PDF (15/31 Pages) Seiko Instruments Inc – STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER

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 (I_SS1) vs. Input Voltage (V_IN) (2) Oscillation Frequency (f_OSC) vs. Input Voltage (V_IN)
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” (I_PDRVH) vs.
Input Voltage (V_IN)
70
(4) PDRV Pin Output Current “L” (I_PDRVL) vs.
Input Voltage (V_IN)
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” (I_NDRVH) vs.
Input Voltage (V_IN)
70
(6) NDRV Pin Output Current “L” (I_NDRVL) vs.
Input Voltage (V_IN)
120
60
100
50
I_NDRVH 40
(mA)
30
20
Ta = −40°C
80
I_NDRVL
(mA) ₆₀
40
Ta = −40°C
Ta = 25°C
10
Ta = 25°C
20
Ta = 85°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)
(7) ON/OFF Pin Input Voltage “H” (V_SH) vs.
Input Voltage (V_IN)
1.8
(8) ON/OFF Pin Input Voltage “L” (V_SL) vs.
Input Voltage (V_IN)
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)
Seiko Instruments Inc.
15