CS5211GD14G データシートの表示（PDF） - ON Semiconductor

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CS5211GD14G

Low Voltage Synchronous Buck Controller

ON Semiconductor 

CS5211

ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C; −40°C < TJ < 125°C; 4.5 V < VCC, VC < 14 V; 7.0 V < BST < 20 V;

CGATE(H) = CGATE(L) = 3.3 nF; ROSC = 51 k; CCOMP = 0.1 mF, unless otherwise specified.) (Note 2)

Characteristic

Test Conditions

Min

Typ Max

Error Amplifier

VFB Bias Current

VFB = 0 V

COMP Source Current

VFB = 0.8 V

COMP SINK Current

VFB = 1.2 V

Open Loop Gain

−

−

0.1

1.0

15

30

60

15

30

60

−

98

−

Unity Gain Bandwidth

C = 0.1 mF

−

50

−

PSRR @ 1.0 kHz

−

−

70

−

Output Transconductance

−

−

32

−

Output Impedance

−

−

2.5

−

Reference Voltage

COMP Max Voltage

COMP Min Voltage

GATE(H) and GATE(L)

High Voltage (AC)

Low Voltage (AC)

Rise Time

−0.1 V < SGND < 0.1 V, COMP = VFB, Measure VFB to SGND

VFB = 0.8 V

VFB = 1.2 V

0.977

2.5

−

0.992

3.0

0.1

1.007

−

0.2

GATE(L),

GATE(H) 0.5 nF < CGATE(H) = CGATE(L) < 10 nF

GATE(L) or GATE(H) 0.5 nF < CGATE(H); CGATE(L) < 10 nF

VC = BST = 10 V, Measure:

1.0 V < GATE(L) < 9.0 V, 1.0 V < GATE(H) < 9.0 V

VC − 0.5

−

−

BST − 0.5

−

−

0.5

−

40

80

Fall Time

VC = BST = 10 V, Measure:

1.0 V < GATE(L) < 9.0 V, 1.0 V < GATE(H) < 9.0 V

−

40

80

GATE(H) to GATE(L) Delay

GATE(H) < 2.0 V, GATE(L) > 2.0 V

40

70

110

GATE(L) to GATE(H) Delay

GATE(L) < 2.0 V, GATE(H) > 2.0 V

40

70

110

GATE(H)/(L) Pull−Down

Resistance to PGND

20

50

115

Overcurrent Protection

OVC Comparator Offset Voltage

IS+ Bias Current

IS− Bias Current

COMP Discharge Threshold

0 V < IS+ < VCC, 0 V < IS− < VCC

0 V < IS+ < VCC

0 V < IS− < VCC

−

54

−1.0

−1.0

0.20

60

66

0.1

1.0

0.1

1.0

0.25 0.30

COMP Discharge Current in

OVC Fault Mode

COMP = 1.0 V

2.0

5.0

8.0

PWM Comparator

Transient Response

PWM Comparator Offset

Artificial Ramp

COMP = 0 − 1.5 V, VFFB, 20 mV overdrive

VFB = VFFB = 0 V; Increase COMP until GATE(H) starts switching

Duty Cycle = 90%

−

0.425

40

100

0.475

70

200

0.525

100

VFFB Bias Current

VFFB = 0 V

VFFB Input Range

(Note 4)

Minimum Pulse Width

−

−

0.1

1.0

−

−

1.1

−

−

200

Oscillator

Switching Frequency

ROSC = 18 k

Switching Frequency

ROSC = 51 k

Switching Frequency

ROSC = 115 kW

ROSC Voltage

−

2. Guaranteed by design. Not tested in production.

600

750

900

240

300

360

120

150

180

1.21

1.25 1.29

Unit

mA

mA

mA

dB

kHz

dB

mmho

MW

V

V

V

V

V

ns

ns

ns

ns

KW

mV

mA

mA

V

mA

ns

V

mV

mA

V

ns

kHz

kHz

kHz

V

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