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S-8540A33FN-IAST2G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
Rev.4.0_00
4 Seiko Instruments Inc.
3. Product name list
3.1 A, B types (oscillation frequency: 600 kHz)
Table 1
Output Voltage (V) S-8540xxxFN Series S-8541xxxFN Series
1.5 S-8540A15FN-IAAT2z
−
1.6
−
S-8541A16FN-IGBT2z
1.8 S-8540A18FN-IADT2z S-8541A18FN-IGDT2z
2.5 S-8540A25FN-IAKT2z S-8541A25FN-IGKT2z
3.3 S-8540A33FN-IAST2z S-8541A33FN-IGST2z
5.0 S-8540A50FN-IBBT2z
−
Feed back (1.5 to 6.0) S-8540B00FN-IMAT2z S-8541B00FN-IMDT2z
3.2 C,D types (oscillation frequency: 300 kHz)
Table 2
Output Voltage (V) S-8540xxxFN Series S-8541xxxFN Series
1.8 S-8540C18FN-ICDT2z S-8541C18FN-IIDT2z
2.5 S-8540C25FN-ICKT2z S-8541C25FN-IIKT2z
3.2
−
S-8541C32FN-IIRT2z
3.3 S-8540C33FN-ICST2z S-8541C33FN-IIST2z
Feed back (1.5 to 6.0) S-8540D00FN-IMBT2z S-8541D00FN-IMET2z
Remark 1. Please consult the SII marketing department for products with an output voltage other
than those specified above.
2. z: G or S
3. Please select products of environmental code = U for Sn 100%, halogen-free
products.
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_00
S-8540/8541 Series
Seiko Instruments Inc. 5
Pin Configuration
Table 3
Pin No. Pin Name Pin Description
1 VSS GND pin
2 EXT Connection pin for external transistor
3 VIN IC power supply pin
4 CVREF
Bypass capacitor connection pin for
reference voltage source
5
ON/
OFF
Shutdown pin
Soft-start capacitor connection pin
• Normal operation (step-down operation)
• All circuit halts (no step-down operation)
NC
*1
None connected (A, C types)
6
FB Feed back pin (B, D types)
8-Pin MSOP
TOP view
1
2
3
4
5
6
7
8
Figure 3
7 VOUT Output voltage pin
8 SENSE Current limit detection pin
*1. The NC pin is electrically open.
The NC pin can be connected to VIN and VSS.
STEP-DOWN, 600 kHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8540/8541 Series
Rev.4.0_00
6 Seiko Instruments Inc.
Absolute Maximum Ratings
Table 4
(Ta = 25 °C unless otherwise specified)
Item Symbol Absolute Maximum Ratings Unit
VIN pin voltage V
IN
V
SS
− 0.3 to V
SS
+ 12 V
CVREF pin voltage V
CVREF
V
SS
− 0.3 to V
IN
+ 0.3 V
ON/OFF pin voltage V
ON/OFF
V
SS
− 0.3 to V
SS
+ 12 V
FB pin voltage
*1
V
FB
V
SS
− 0.3 to V
SS
+ 12 V
VOUT pin voltage V
OUT
V
SS
− 0.3 to V
SS
+ 12 V
SENSE pin voltage V
SENSE
V
SS
− 0.3 to V
SS
+ 12 V
EXT pin voltage V
EXT
V
SS
− 0.3 to V
IN
+ 0.3 V
EXT pin current I
EXT
± 100 mA
300 (When not mounted on board) mW
Power dissipation P
D
500
*2
mW
Operating ambient temperature T
opr
− 40 to + 85 °C
Storage temperature T
stg
− 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 (2) When not mounted on board
0
50 100
150
400
200
0
Power dissipation P
D
(mW)
Ambient temperature Ta (°C)
500
300
100
600
0
50 100
150
200
100
0
Power dissipation
P
D
(mW)
Ambient temperature Ta (°C)
250
150
50
300
350
Figure 4 Power Dissipation of Package
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

S-8540A33FN-IAST2G

Mfr. #:
Buy S-8540A33FN-IAST2G
Manufacturer:
ABLIC
Description:
Switching Controllers 3.3V Step-Down PWM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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