S-8540 Datasheet, PDF (6/36 Pages) Seiko Instruments Inc – STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
Rev.3.2_00
„ Absolute Maximum Ratings
Table 4
(Ta = 25 °C unless otherwise specified)
Item
Symbol
Absolute Maximum Ratings
Unit
VIN pin voltage
CVREF pin voltage
ON/OFF pin voltage
FB pin voltage^*1
VOUT pin voltage
SENSE pin voltage
EXT pin voltage
EXT pin current
Power dissipation
V_IN
V_CVREF
V_ON/OFF
V_FB
V_OUT
V_SENSE
V_EXT
I_EXT
P_D
V_SS − 0.3 to V_SS + 12
V
V_SS − 0.3 to V_IN + 0.3
V
V_SS − 0.3 to V_SS + 12
V
V_SS − 0.3 to V_SS + 12
V
V_SS − 0.3 to V_SS + 12
V
V_SS − 0.3 to V_SS + 12
V
V_SS − 0.3 to V_IN + 0.3
V
± 100
mA
300 (When not mounted on board)
mW
500^*2
mW
Operating ambient temperature
T_opr
Storage temperature
T_stg
− 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
250
400
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
Seiko Instruments Inc.