S-8357E50MC-NLJT2G Seiko Instruments, S-8357E50MC-NLJT2G Datasheet - Page 29

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S-8357E50MC-NLJT2G

Manufacturer Part Number
S-8357E50MC-NLJT2G
Description
IC REG CTRL PWM 5.0V SOT23-5
Manufacturer
Seiko Instruments
Type
Step-Up (Boost)r
Datasheet

Specifications of S-8357E50MC-NLJT2G

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
100mA
Frequency - Switching
100kHz
Voltage - Input
0.9 ~ 10 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
5 V
Input Voltage
10 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.7.0
External Parts Selection
The relationship between the major characteristics of the step-up circuit and the characteristics parameters of the
external parts are shown in Figure 16.
STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Smaller direct current resistance of inductor
For larger output current ?
Larger output capacitance
_00
Smaller inductance
Figure 16 Relationship between Major Characteristics of Step-up Circuit and External Parts
With MOS FET,
smaller ON resistance
With bipolar transistor,
smaller external resistance R
Operation
efficiency
b
Seiko Instruments Inc.
For higher efficiency ?
Larger inductance
With bipolar transistor, larger
external resistance R
efficiency
With MOS FET,
smaller input capacitance
Stand-by
b
For smaller ripple voltage ?
S-8355/56/57/58 Series
Larger output capacitance
29

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