S-8550AA-M5T1G Seiko Instruments, S-8550AA-M5T1G Datasheet - Page 14

• 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

*1. Parasitic diode
*1. Parasitic diode
Caution The above connection diagram and constant will not guarantee successful operation. Perform thorough
14
STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS
S-8550/8551 Series
1. SOT-23-5
Standard Circuit
2. SNT-8A
V
V
IN
IN
4.7 μF
C
4.7 μF
C
IN
evaluation using an actual application to set the constants.
IN
FB
FB
Error amplifier
Error amplifier
Reference
voltage
Reference
voltage
+
−
−
+
ON/OFF
ON/OFF
circuit
circuit
ON/OFF
ON/OFF
PWM comparator
PWM comparator
+
−
+
−
Seiko Instruments Inc.
Current limit
Current limit
UVLO circuit
UVLO circuit
circuit
circuit
Figure 13
Figure 14
Triangular wave
Triangular wave
PWM control
generation
PWM control
generation
circuit
circuit
circuit
VSS
circuit
IC internal
power supply
IC internal
power supply
PVSS
VIN
VSS
VIN
Ground point
Ground point
*1
*1
*1
*1
CONT
CONT
1.0 μF
1.0 μF
68 pF
3.3 μH
68 pF
3.3 μH
L
C
L
C
FB
FB
Rev.4.0
R
36 kΩ
R
18 kΩ
R
36 kΩ
R
18 kΩ
FB1
FB2
FB1
FB2
V
V
OUT
_00
C
10 μF
OUT
C
10 μF
OUT
OUT