CS51033 datasheet(3/10 Pages) ONSEMI

No de pièce	CS51033

Description	Fast P?묬h FET Buck Controller

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Fabricant	ONSEMI [ON Semiconductor]

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CS51033

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ELECTRICAL CHARACTERISTICS (Specifications apply for 3.135

≤ VCC ≤ 3.465, 3.0 V ≤ VC ≤ 16 V;

Industrial Grade: −40

°C < TA < 85°C; −40°C < TJ < 125°C: Commercial Grade: 0°C < TA < 70°C; 0°C < TJ < 125°C, unless otherwise specified.)

Characteristic

Test Conditions

Min

Typ

Max

Unit

Oscillator

VFB = 1.2 V

Frequency

COSC = 470 pF

160

200

240

kHz

Charge Current

1.4 V < VCOSC < 2.0 V

−

110

−

mA

Discharge Current

2.7 V > VCOSC > 2.0 V

−

660

−

mA

Maximum Duty Cycle

1 − (tOFF/tON)

80.0

83.3

−

%

Short Circuit Timer

VFB = 1.0 V; CS = 0.1 mF; VCOSC = 2.0 V

Charge Current

1.0 V < VCS < 2.0 V

175

264

325

mA

Fast Discharge Current

2.55 V > VCS > 2.4 V

40

66

80

mA

Slow Discharge Current

2.4 V > VCS > 1.5 V

4.0

6.0

10

mA

Start Fault Inhibit Time

−

0.70

0.85

1.40

ms

Valid Fault Time

2.6 V > VCS > 2.4 V

0.2

0.3

0.45

ms

GATE Inhibit Time

2.4 V > VCS > 1.5 V

9.0

15

23

ms

Duty Cycle

−

2.5

3.1

4.6

%

CS Comparator

VFB = 1.0 V

Fault Enable CS Voltage

−

2.5

−

V

Max CS Voltage

VFB = 1.5 V

−

2.6

−

V

Fault Detect Voltage

VCS when GATE goes high

−

2.4

−

V

Fault Inhibit Voltage

Minimum VCS

−

1.5

−

V

Hold Off Release Voltage

VFB = 0 V

0.4

0.7

1.0

V

Regulator Threshold Voltage Clamp

VCS = 1.5 V

0.725

0.866

1.035

V

VFB Comparators

VCOSC = VCS = 2.0 V

Regulator Threshold Voltage

TJ = 25°C (Note 2)

TJ = −40 to 125°C

1.225

1.210

1.250

1.275

1.290

V

Fault Threshold Voltage

TJ = 25°C (Note 2)

TJ = −40 to 125°C

1.12

1.10

1.15

1.17

1.19

V

Threshold Line Regulation

3.135 V

≤ VCC ≤ 3.465

−

6.0

15

mV

Input Bias Current

VFB = 0 V

−

1.0

4.0

mA

Voltage Tracking

(Regulator Threshold − Fault Threshold Voltage)

70

100

120

mV

Input Hysteresis Voltage

−

4.0

20

mV

Power Stage

VC = 10 V; VFB = 1.2 V

GATE DC Low Saturation Voltage

VCOSC = 1.0 V; 200 mA Sink

−

1.2

1.5

V

GATE DC High Saturation Voltage

VCOSC = 2.7 V; 200 mA Source; VC = VGATE

−

1.5

2.1

V

Rise Time

CGATE = 1.0 nF; 1.5 V < VGATE < 9.0 V

−

25

60

ns

Fall Time

CGATE = 1.0 nF; 9.0 V > VGATE > 1.5 V

−

25

60

ns

Current Drain

ICC

3.135 V < VCC < 3.465 V, Gate switching

−

3.5

6.0

mA

IC

3.0 V < VC < 16 V, Gate non−switching

−

2.7

4.0

mA

2. Guaranteed by design, not 100% tested in production.

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