MIC9131 datasheet(3/20 Pages) MICREL

3 / 20 page

July 2001

MIC9131

Micrel

Absolute Maximum Ratings (Note 1)

Line Input Voltage (V

LINE) ......................................... +190V

CC Input Voltage (VCC) ............................................. +19V

Current Sense Input Voltage (V

ISNS) ............. –0.3 to +5.3V

Enable Voltage (V

EN) ............................ –0.3 to VCC + 0.3V

Feedback Input Voltage (V

FB) ........................ –0.3 to +5.3V

Sync Input Voltage (V

SYNC) ........................... –0.3 to +5.3V

Soft-Start Voltage (V

SS) ................................. –0.3 to +5.3V

UVLO Voltage (V

UVLO) .................................. –0.3 to +5.3V

Storage Temperature (T

S) ....................... –65°C to +150°C

Power Dissipation (P

D) .......................................................

16-pin SOP .................................. 400mW @ T

A = +85°C

16-pin QSOP ............................... 245mW @ T

A = +85°C

ESD Rating, Note 3

Operating Ratings (Note 2)

Line Input Voltage (V

LINE) ................ VCC to +180V, Note 4

CC Input Voltage (VCC) ................................. +9V to +18V

Junction Temperature Range (T

J) ........... –40°C to +125°C

Package Thermal Resistance

16-pin SOP

(θ

JA) ............................................... 100°C/W

16-pin QSOP

(θ

JA) ............................................ 163°C/W

Electrical Characteristics

A = 25°C, VLINE = 48V, VCC = 10V, Rt = 9.47KΩ, Ct = 470pF, RBIAS = 562kΩ, VEN = 10V, VISNS = 0V, VUVLO = 2V, VSYNC = 0V, unless

otherwise noted. Bold values indicate –40

°C ≤T

J ≤ +125°C.

Parameter

Condition

Min

Typ

Max

Units

Bias Regulator

Output Voltage

VBIAS = 0mA; VOSC = 0V (Oscillator OFF)

4.7

4.85

5.0

4.6

5.1

Line Regulation

≤ V

CC ≤18V, IVBIAS = 0mA; VOSC = 0V

Load Regulation

0mA

≤ I

VBIAS ≤ 5mA; VOSC = 0V

Oscillator Section

Initial Accuracy (f

OSC)Rt = 9.47KΩ, Ct = 470pF

180

200

220

kHz

Oscillator Output Frequency

OSC/4

kHz

Maximum Duty Cycle

Voltage Stability (

∆f/f)

≤ V

CC ≤18V

2.5

Temperature Stability

–40

°C ≤ T

J ≤ 125°C

100

ppm/

°C

Maximum Sync Frequency

Note 5

MHz

Sync Threshold Level

2.5

Sync Hysteresis

0.7

Sync Minimum Pulse Width

Error Amp Section

FB Voltage

COMP = VFB

2.475

2.5

2.525

2.45

2.55

Open Loop Voltage Gain, A

VOL

Unity Gain Bandwidth

MHz

PSRR

≤ V

CC ≤ 18V

COMP Sink Current

FB = 2.7V; VCOMP = 5V

100

µA

COMP Source Current

FB = 2.3V; VCOMP = 0V

2.5

COMP Low

FB = 2.7V; ICOMP = –50µA

115

300

COMP High

FB = 2.3V; ICOMP = +500µA

3.5

Input Bias Current (I

FB)VFB = VCOMP

160

Slew Rate

SINK

1.5

µs

SOURCE

1.5

µs

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