SG1842 查看數據表（PDF） - Microsemi Corporation

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SG1842

Current Mode PWM Controller

Microsemi Corporation 

Current Mode PWM Controller

Absolute Maximum Ratings1 - 2

Parameter

Value

Supply Voltage (ICC < 30mA)

Supply Voltage (Low Impedance Source)

Self-limiting

30

Output Current (Peak)

±1

Output Current (Continuous)

350

Output Energy (Capacitive Load)

5

Analog Inputs (VFB, ISENSE)

Error Amplifier Output Sink Current

-0.3 to +6.3

10

Power Dissipation at TA = 25°C (DIL-8)

1

Operating Junction Temperature

Hermetic (J, Y, F, L Packages)

150

Plastic (N, M, D, DM Packages)

150

Storage Temperature Range

-65 to +150

Lead Temperature (Soldering, 10 Seconds)

300

RoHS / Pb-free Peak Package Solder Reflow Temp. (40 second

max. exposure)

260 (+0, -5)

Notes:

1. Exceeding these ratings could cause damage to the device.

2. All voltages are with respect to Pin 5. All currents are positive into the specified terminal.

Units

V

V

A

mA

µJ

V

mA

W

°C

°C

°C

°C

°C

Thermal Data

Parameter

Value

Units

M Package:

Thermal Resistance-Junction to Ambient, θJA

N Package:

Thermal Resistance-Junction to Ambient, θJA

DM Package:

Thermal Resistance-Junction to Ambient, θJA

D Package:

95

°C/W

65

°C/W

165

°C/W

Thermal Resistance-Junction to Ambient, θJA

120

°C/W

Y Package:

Thermal Resistance-Junction to Ambient, θJA

130

°C/W

J Package

Thermal Resistance-Junction to Ambient, θJA

80

°C/W

F Package

Thermal Resistance-Junction to Case, θJC

80

°C/W

Thermal Resistance-Junction to Ambient, θJA

145

°C/W

L Package

Thermal Resistance-Junction to Case, θJC

35

°C/W

Thermal Resistance-Junction to Ambient, θJA

120

°C/W

Notes:

1. Junction Temperature Calculation: TJ = TA + (PD × θJA).

2. The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no

ambient airflow.

4

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