S-8540 SII [Seiko Instruments Inc], S-8540 Datasheet - Page 6

• Manufacturer Part Number: S-8540
• Description: STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
• Manufacturer: SII [Seiko Instruments Inc]

6
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
Absolute Maximum Ratings
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
VIN pin voltage
CVREF pin voltage
ON/OFF pin voltage
FB pin voltage
VOUT pin voltage
SENSE pin voltage
EXT pin voltage
EXT pin current
Power dissipation
Operating ambient temperature
Storage temperature
*1. Feed back type (B, D types)
*2. When mounted on board
(1) When mounted on board
[Mounted board]
600
500
400
300
200
100
(1) Board size :
(2) Board name : JEDEC STANDARD51-7
physical damage. These values must therefore not be exceeded under any conditions.
0
0
*1
Item
Ambient temperature Ta (°C)
50
114.3 mm × 76.2 mm × t1.6 mm
100
Figure 4 Power Dissipation of Package
V
V
V
V
V
V
V
I
P
T
T
EXT
opr
stg
IN
CVREF
ON/OFF
FB
OUT
SENSE
EXT
D
150
Seiko Instruments Inc.
Symbol
Table 4
(2) When not mounted on board
300 (When not mounted on board)
Absolute Maximum Ratings
200
150
100
350
300
250
50
V
V
V
V
V
V
V
0
SS
SS
SS
SS
SS
SS
SS
0
− 40 to + 125
− 0.3 to V
− 0.3 to V
− 0.3 to V
− 0.3 to V
− 0.3 to V
− 0.3 to V
− 0.3 to V
(Ta = 25 °C unless otherwise specified)
− 40 to + 85
Ambient temperature Ta (°C)
± 100
500
*2
50
IN
IN
SS
SS
SS
SS
SS
+ 0.3
+ 0.3
+ 12
+ 12
+ 12
+ 12
+ 12
100
Rev.3.2
150
Unit
mW
mW
mA
°C
°C
V
V
V
V
V
V
V
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