S-8340A25AFT-T2-X Datasheet, PDF (32/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.4.0_01
 Reference Data
Reference data are intended for use in selecting external parts to the IC. The information therefore provides
characteristic data in which external parts are selected with a view of wide variety of IC applications. All data shows
typical value.
1. External Parts for Reference Data
Table 10 External Parts List for Output Current vs. Efficiency, Output Current vs. Output Voltage
Characteristics Data for A Type
No.
Product
Name
Output
Voltage
Inductor
Transistor
Diode
Output Capacitor
Sense
Resistor
Application
(1) S-8340A25AFT 2.5 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1
0Ω
*1
(2)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*2
(3) S-8341A25AFT
CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1
*1
(4)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*2
(5) S-8340A33AFT 3.3 V CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1
*1
(6)
CDRH124/10 μH FTS2001 RBO81L-20 F951C476MG1 × 2
*2
(7) S-8341A33AFT
CDRH5D18/4.1 μH NDS335N RB491D F920J476MB3 × 1
*1
(8)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*2
(9) S-8340A50AFT 5.0 V CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1
*1
(10)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*2
(11) S-8341A50AFT
CDRH5D18/4.1 μH NDS335N RB491D F951A476MF1 × 1
*1
(12)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*2
*1. CDRH5D18 + NDS335N + RB491D: For small and thin parts of which height is 2 mm or shorter (The maximum current of
an external part should be set to 1.7 A.)
*2. CDRH124 + FTS2001 + RBO81L-20: For heavy load current (The maximum current of an external part should be set to
4.5 A.)
Table 11 External Parts List for Output Current vs. Efficiency, Output Current vs. Output Voltage
Characteristics Data for C Type
No.
Product
Name
Output
Voltage
Inductor
Transistor
Diode
Output Capacitor
(13) S-8340C25AFT 2.5 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(14)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
(15) S-8341C25AFT
CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(16)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
(17) S-8340C33AFT 3.3 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(18)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
(19) S-8341C33AFT
CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(20)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
(21) S-8340C50AFT 5.0 V CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(22)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
(23) S-8341C50AFT
CDRH6D28/10 μH FDN335N RB491D F951C476MG1 × 1
(24)
CDRH124/10 μH FTS2001 RBO81L−20 F951C476MG1 × 2
*3. CDRH6D28 + FDN335N + RB491D: For part height of 3 mm and high efficiency
*4. CDRH124 + FTS2001 + RBO81L-20: For optimizing the load current driveability
Sense
Resistor
0Ω
Application
*3
*4
*3
*4
*3
*4
*3
*4
*3
*4
*3
*4
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