S-8521F25MC-BPKT2G Seiko Instruments, S-8521F25MC-BPKT2G Datasheet - Page 21

• Manufacturer Part Number: S-8521F25MC-BPKT2G
• Description: IC REG PWM/PFM 300KHZ SOT23-5
• Manufacturer: Seiko Instruments
• Type: Step-Down (Buck)r

Specifications of S-8521F25MC-BPKT2G

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5V
• Current - Output: 120mA
• Frequency - Switching: 300kHz
• Voltage - Input: 2.5 ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Power - Output: 250mW
• Output Voltage: 2.5 V
• Input Voltage: 2.5 V to 16 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.9.0
V
V
1. Using a bipolar transistor
2. Using a Pch MOS FET transistor
IN
Standard Circuits
IN
Caution
STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
_00
+
+
C
C
IN
IN
The above connection diagram and constant will not guarantee successful operation. Perform
through evaluation using the actual application to set the constant.
R
b
SD
Tr
Tr
SD
C
ON/OFF
ON/OFF
b
EXT
______
VIN
______
EXT
VIN
Seiko Instruments Inc.
Figure 12
Figure 13
Oscillation
PWM control or
PWM / PFM switching
control circuit
PWM control or
PWM / PFM switching
control circuit
Oscillation
circuit
circuit
VSS
VSS
source with soft start
source with soft start
Reference voltage
Reference voltage
L
L
V
V
ON/ OFF
ON/ OFF
______
______
−
+
+
−
S-8520/8521 Series
VOUT
VOUT
+
+
C
C
OUT
OUT
21