CS5212 datasheet(3/13 Pages) ONSEMI

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CS5212

http://onsemi.com

MAXIMUM RATINGS

Pin Name

Pin Symbol

VMAX

VMIN

ISOURCE

ISINK

IC Power Input

VCC

6.0 V

−0.3 V

N/A

50 mA DC

Power input for the low side driver

16 V

−0.3 V

N/A

1.5 A Peak,

200 mA DC

Power Supply input for the high side driver

BST

20 V

−0.3 V

N/A

1.5 A Peak,

200 mA DC

Compensation Capacitor

COMP

6.0 V

−0.3 V

1.0 mA

Voltage Feedback Input

VFB

6.0 V

−0.3 V

1.0 mA

Oscillator Resistor

ROSC

6.0 V

−0.3 V

1.0 mA

Fast Feedback Input

VFFB

6.0 V

−0.3 V

1.0 mA

High−Side FET Driver

GATE(H)

20 V

−0.3 V

−2.0 V for 50 ns

1.5 A Peak,

200 mA DC

1.5 A Peak,

200 mA DC

Low−Side FET Driver

GATE(L)

16 V

−0.3 V

−2.0 V for 50 ns

1.5 A Peak,

200 mA DC

1.5 A Peak,

200 mA DC

Positive Current Sense

IS+

6.0 V

−0.3 V

1.0 mA

Negative Current Sense

IS−

6.0 V

−0.3 V

1.0 mA

Power Ground

PGND

0.3 V

−0.3 V

1.5 A Peak,

200 mA DC

N/A

Logic Ground

LGND

0 V

100 mA

N/A

Sense Ground

SGND

0.3 V

−0.3 V

1.0 mA

ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C (CS5212E); 0°C < TA < 70°C (CS5212G); −40°C < TJ < 125°C; 3.1 V < VCC <

3.5 V; 3.1 V < VC < 7.0 V; 4.5 V < BST < 20 V; CGATE(H) = CGATE(L) = 3.3 nF; ROSC = 51 k; CCOMP = 0.1 mF, unless otherwise specified.)

Characteristic

Test Conditions

Min

Typ

Max

Unit

Error Amplifier

VFB Bias Current

VFB = 0 V

−

0.1

1.0

COMP Source Current

VFB = 0.8 V

COMP SINK Current

VFB = 1.2 V

Open Loop Gain

−

Unity Gain Bandwidth

C = 0.1 mF

−

kHz

PSRR @ 1.0 kHz

−

Output Transconductance

−

mmho

Output Impedance

−

2.5

−

Reference Voltage

−0.1 V < SGND < 0.1 V,

COMP = VFB, Measure VFB to SGND

0.977

0.992

1.007

COMP Max Voltage

VFB = 0.8 V

2.5

3.0

−

COMP Min Voltage

VFB = 1.2 V

−

0.1

0.2

GATE(H) and GATE(L)

High Voltage (AC)

GATE(L)

GATE(H)

0.5 nF < CGATE(H) = CGATE(L) < 10 nF (Note 2)

VC − 0.5

BST − 0.5

−

Low Voltage (AC)

GATE(L) or GATE(H)

0.5 nF < CGATE(H); CGATE(L) < 10 nF (Note 2)

−

0.5

Rise Time

VC = BST = 7.0 V, Measure:

0.7 V < GATE(L) < 6.3 V,

0.7 V < GATE(H) < 6.3 V

−

Fall Time

VC = BST = 7.0 V, Measure:

0.7 V < GATE(L) < 6.3 V,

0.7 V < GATE(H) < 6.3 V

−

2. GBD.

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