S-8341A30AFT-T2-G Seiko Instruments, S-8341A30AFT-T2-G Datasheet - Page 2

• Manufacturer Part Number: S-8341A30AFT-T2-G
• Description: IC REG SW 600KHZ 3.0V 8-TSSOP
• Manufacturer: Seiko Instruments
• Type: Step-Up (Boost)r

Specifications of S-8341A30AFT-T2-G

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3V
• Frequency - Switching: 600kHz
• Voltage - Input: 0.9 ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Power - Output: 300mW
• Output Voltage: 3 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2
STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
(1) S-8340/8341 Series A and C Types (Output Voltage Fixed Output Type)
(2) S-8340/8341 Series B and D Types (Output Voltage External Setting Type)
Block Diagrams
Nch Power
MOS FET
V
IN
R
SENSE
Nch Power
MOS FET
V
L
IN
R
SENSE
L
SENSE
EXT
SENSE
EXT
120 mV
ON/OFF
R
C
S
S
Shutdown
circuit
120 mV
ON/OFF
R
C
PWM comparator
S
S
Shutdown
circuit
Triangular wave
oscillation circuit
PWM comparator
PWM, PWM/PFM
switching control
circuit
Seiko Instruments Inc.
Triangular wave
oscillation circuit
Soft-start
circuit
CSS
PWM, PWM/PFM
switching control
circuit
SD
Figure 1
Figure 2
Soft-start
circuit
CSS
SD
C
SS
Phase
compensation
circuit
C
V
Error amplifier
CVREF
SS
REF
compensation
Phase
circuit
Voltage/current
reference
=1.0 V
Error amplifier
V
CVREF
REF
Voltage/current
reference
IC internal power
supply
=1.0 V
VDD
C
C
IC internal power
supply
C
VREF
VDD
C
R
R
FB
VREF
2
1
VSS
C
FB
VOUT
VSS
R
R
FB1
FB2
C
+
V
L
OUT
+
C
V
L
OUT
Rev.4.0
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