S-8540A15FN-IAAT2Z Datasheet, PDF (6/36 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
Rev.4.0_01
 Absolute Maximum Ratings
Table 4
(Ta = 25 °C unless otherwise specified)
Item
Symbol
Absolute Maximum Ratings
Unit
VIN pin voltage
VIN
VSS − 0.3 to VSS + 12
V
CVREF pin voltage
ON/OFF pin voltage
FB pin voltage^*1
VOUT pin voltage
VCVREF
VON/OFF
VFB
VOUT
VSS − 0.3 to VIN + 0.3
V
VSS − 0.3 to VSS + 12
V
VSS − 0.3 to VSS + 12
V
VSS − 0.3 to VSS + 12
V
SENSE pin voltage
EXT pin voltage
VSENSE
VEXT
VSS − 0.3 to VSS + 12
V
VSS − 0.3 to VIN + 0.3
V
EXT pin current
Power dissipation
IEXT
± 100
mA
PD
300 (When not mounted on board)
mW
500^*2
mW
Operating ambient temperature
Topr
Storage temperature
Tstg
− 40 to + 85
°C
− 40 to + 125
°C
*1. Feed back type (B, D types)
*2. When mounted on board
[Mounted board]
(1) Board size : 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
(1) When mounted on board
600
(2) When not mounted on board
350
500
300
400
250
200
300
150
200
100
100
50
0
0
50
100
150
Ambient temperature Ta (°C)
0
0
50
100
150
Ambient temperature Ta (°C)
Figure 4 Power Dissipation of Package
6