22

ICs

1-1-3 DC/DC Converter ICs

Full-Mold, Separate Excitation Step-down Switching Mode Regulator ICs

SI-8205NHD

Unit

V

W

°C

°C

°C/W

°C/W

Ratings

46

1.35

–40 to +150

–40 to +150

40

74

Symbol

Parameter

Unit

V

mV/°C

%

kHz

MHz

mV

mV

A

mA

µA

µA

V

V

V

°C

V/V

µA/V

A/V

%

nsec

Symbol

η

fo1

fo2

AEA

GEA

GCS

DMAX

DMIN

Ratings

min.

typ.

max.

0.495

0.500

0.505

±0.05

90

200

1

50

50

3.1

6.0

8

40

5

3.0

4.5

6.0

0.6

1.3

2.0

0.57

0.60

0.63

151

160

800

800

3.33

80

90

150

Conditions

Parameter

Conditions

Unit

V

A

V

°C

°C

Ratings

8 or Vo+3 to 43

0

to 3.0

0.5

to 24

–40 to +125

–40 to +85

Symbol

Parameter

■Absolute Maximum Ratings

■Electrical Characteristics

■Features

■Applications

Surface-Mount, Current Mode Control, Synchronous Rectifier Step-down Switching Mode

■Recommended Operating Conditions

Input Voltage (VIN Pin)

Power Dissipation

Junction Temperature

Storage Temperature

Thermal Resistance (Junction to Lead <1 pin>)

Thermal Resistance (Junction to Ambient Air)

When mounted on a 30 × 30 mm glass-epoxy board (with a 25 × 25 mm copper area)

When mounted on a 30 × 30 mm glass-epoxy board (with a 25 × 25 mm copper area)

Input Voltage Range

Output Current Range

Output Voltage Range

Operating Junction Temperature Range

Operating Temperature Range

Reference Voltage

Temperature Coefficient of Reference Voltage

Efficiency

Oscillation Frequency 1

Oscillation Frequency 2

Line Regulation

Load Regulation

Overcurrent Protection Starting Current

Quiescent Circuit Current

Outflow Current at Low Voltage

EN/SS Pin

Open Voltage

On Threshold Voltage

OVP Start Voltage

Thermal Protection Start Temperature

Error Amplifier Voltage Gain

Error Amplifier Transformer Conductance

Current Sense Amplifier Impedance

Maximum ON Duty

Minimum ON Time

*: The minimum value of the input voltage range is 8 V or Vo + 3V, whichever is higher.