S-8550AA-M5T1G Seiko Instruments, S-8550AA-M5T1G Datasheet - Page 4

• Manufacturer Part Number: S-8550AA-M5T1G
• Description: IC, SYNC STEP-DOWN REGULATOR, SOT-23-5
• Manufacturer: Seiko Instruments

Specifications of S-8550AA-M5T1G

• Primary Input Voltage: 5.5V
• No. Of Outputs: 1
• Output Voltage: 4V
• Output Current: 600mA
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +85°C
• Operating Temperature Min: 85°C
• Input Voltage: 5.5 V
• Duty Cycle (max): 100 %
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23-5
• Minimum Operating Temperature: - 40 C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4
STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS
S-8550/8551 Series
Pin Configurations
1
2
3
4
1
5
SOT-23-5
Top view
Figure 3
Top view
Figure 4
SNT-8A
2
4
3
8
7
6
5
*1. The NC pin is electrically open.
*2. Connect VSS and PVSS to GND.
Seiko Instruments Inc.
Pin No.
Pin No.
Pin No.
Table 2 S-8551 Series (SOT-23-5, Pin Configuration 2)
The NC pin can be connected to VIN, VSS or PVSS.
Table 1 S-8550 Series (SOT-23-5, Pin Configuration 1)
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
Table
3 S-8550
ON/OFF
ON/OFF
ON/
Symbol
Symbol
Symbol
PVSS
CONT
CONT
CONT
VSS
NC
NC
VSS
VSS
VIN
VIN
VIN
FB
FB
FB
OFF
*1
*1
*2
*2
Series (SNT-8A, Pin Configuration 3)
IC power supply pin
GND pin
Shutdown pin
“H” : Power on (normal operation)
“L” : Power off (standby)
Output voltage feedback pin
External inductor connection pin
Shutdown pin
“H” : Power on (normal operation)
“L” : Power off (standby)
GND pin
External inductor connection pin
IC power supply pin
Output voltage feedback pin
Output voltage feedback pin
No connection
Small signal GND Pin
Shutdown pin
“H”：Power on (normal operation)
“L”：Power off (standby)
IC power supply pin
Power GND pin
No connection
External inductor connection pin
Description
Description
Description
Rev.4.0
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