CS5661 datasheet(2/8 Pages) ONSEMI

2 / 8 page

Electrical Characteristics: (VCC = 15V, RT = 8.2kΩ, CT = 3.3nF, for typical values TA = 25°C, for min/max values -40°C < TA < 85°C,

unless otherwise stated.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Absolute Maximum Ratings

Output Current, Source or Sink (Note 1) ......................................................................................................................400mA

Output Energy (capacitive load per cycle) .......................................................................................................................5.0µJ

Current Sense, Enable and Voltage ......................................................................................................................-0.3 to +5.5V

Feedback Inputs

Sync Input – High State (Voltage) ......................................................................................................................................5.5V

– Low State (Reverse Current) ...................................................................................................................-5.0mA

Error Amp Output Sink Current......................................................................................................................................10mA

Storage Temperature Range ................................................................................................................................-65 to +150°C

Operating Junction Temperature...................................................................................................................................+150°C

Lead Temperature Soldering

Reflow (SMD styles only) ......................................................................................60 sec. max above 183°C, 230°C peak

ESD Capability (Human Body Model) ...................................................................................................................................2kV

s Reference Section

Reference Output Voltage,

IOUT = 1.0mA, TJ = 25°C

4.9

5.0

5.1

VREF

Line Regulation

11V

≤ V

CC ≤ 15V

2.0

20.0

Load Regulation

1.0mA

≤ I

OUT ≤ 10mA

3.0

30.0

Total Output Variation over

4.85

5.15

Line, Load and Temperature

Output Short Circuit Current

100

s Oscillator and PWM Sections

Total Frequency Variation

11V

≤ V

CC ≤ 15V, Tlow ≤ TA ≤ Thigh

46.0

49.5

53.0

kHz

over Line and Temperature

Frequency Change with

11V

≤ V

CC ≤ 15V

0.2

1.0

Voltage

Duty Cycle at each Output

Maximum

46.0

49.5

52.0

SYNC Current

High State VIN = 2.4V

170

250

µA

Low State VIN = 0.8V

160

s Error Amplifiers

Voltage Feedback Input

VOUT = 2.5V

2.42

2.50

2.58

Input Bias Current

VFB = 5.0V

-0.1

-1.0

µA

Open-Loop Voltage Gain

2.0V

≤ V

OUT ≤ 4.0V

100

Unity Gain Bandwidth

TJ = 25°C (Note 5)

0.7

1.0

MHz

Power Supply Rejection Ratio VCC = 11V to 15V

Output Current

Source VOUT = 3.0V, VFB = 2.3V

-0.45

-1.00

Sink VOUT = 1.2V, VFB = 2.7V

2.00

12.00

Output Voltage Swing

High State RL = 15kΩ to ground,

VFB = 2.3V

5.0

6.2

Low State RL = 15kΩ to VREF,

VFB = 2.7V

0.8

1.1

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