S-8550AA-M5T1G Seiko Instruments, S-8550AA-M5T1G Datasheet - Page 5

• 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

STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS
Rev.4.0
Absolute Maximum Ratings
*1. When mounted on printed circuit board
Caution
VIN pin voltage
FB pin voltage
CONT pin voltage
ON/OFF pin voltage
CONT pin current
Power
dissipation SNT-8A
Operating temperature
Storage temperature
[Mounted board]
_00
(1) Board size: 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name: JEDEC STANDARD51-7
Parameter
1. The absolute maximum ratings are rated values exceeding which the product could suffer
2. Since this IC has a built-in power MOS FET, make sure that dissipation of the power MOS FET
SOT-23-5
physical damage. These values must therefore not be exceeded under any conditions.
does not exceed the allowable power dissipation of the package. (Refer to Figure 5.)
Generally, dissipation of a switching regulator can be calculated by the following equation.
Dissipation = (100 (%) − efficiency (%)) / efficiency (%) × output voltage × load current
The greater part of dissipation depends on the built-in power MOS FET, however, dissipation
of the inductor is also included.
In addition, since power dissipation of the package also changes according to a mounting
board or a mounting state, fully check them using an actually mounted mode.
Figure 5 Power Dissipation of Package (Mounted on Board)
V
V
V
V
I
P
T
T
CONT
IN
FB
CONT
ON/OFF
D
opr
stg
Table 4 Absolute Maximum Ratings
Symbol
700
600
500
400
300
200
100
Seiko Instruments Inc.
0
0
SNT-8A
Ambient temperature (Ta) [°C]
50
(Unless otherwise specified: Ta = 25°C, V
SOT-23-5
100
Absolute Maximum Rating
V
V
V
V
SS
SS
SS
SS
− 0.3 to V
− 0.3 to V
− 0.3 to V
− 0.3 to V
−40 to +125
−40 to +85
150
600
450
1300
*1
*1
SS
IN
IN
IN
+ 0.3
+ 0.3
+ 0.3
+ 6.0
S-8550/8551 Series
SS
Unit
mW
mW
mA
°C
°C
V
V
V
V
= 0 V)
5