CS5165HGDWR16 View Datasheet(PDF) - Cherry semiconductor

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Description

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CS5165HGDWR16

Fast, Precise 5-Bit Synchronous Buck Controller for the Next Generation Low Voltage Pentium® II Processors

Cherry semiconductor 

Electrical Characteristics: 0˚C < TA < 70˚C; 0˚C < TJ < 125˚C; 8V < VCC < 20V; 2.8V DAC Code (VID4=VID2=VID1=VID0=1, VID3= 0),

CGATE(H) = CGATE(L) = 3.3nF, COFF = 330pF, CSS= 0.1µF; Unless otherwise stated.

PARAMETER

s VCC Supply Current

Operating

Sleep Mode

s VCC Monitor

Start Threshold

Stop Threshold

Hysteresis

TEST CONDITIONS

MIN

1V < VFB < VDAC (max on-time)

No Loads on Gate(H) and Gate(L)

ENABLE = 0V, 8V< VCC <14V

GATE(H) Switching

3.75

GATE(H) not switching

3.65

Start - Stop

TYP

12

300

3.95

3.87

80

MAX

UNIT

20

mA

600

µA

4.15

V

4.05

V

mV

s Error Amplifier

VFB Bias Current

VFB = 0V

0.1

COMP Source Current

COMP = 1.2V to 3.6V; VFB = 2.7V

15

30

COMP CLAMP Voltage

VFB = 2.7V, Adjust COMP voltage for 0.85

1.0

Comp current = 50µA

COMP Clamp Current

COMP = 0V

0.4

1.0

COMP Sink Current

Open Loop Gain

VCOMP =1.2V; VFB = 3V; VSS > 2.5V

180

400

Note 1

50

60

Unity Gain Bandwidth

Note 1

0.5

2

PSRR @ 1kHZ

Note 1

60

85

1.0

µA

60

µA

1.15

V

1.6

mA

800

µA

dB

MHz

dB

s GATE(H) and GATE(L)

High Voltage at 100mA

Low Voltage at 100mA

Measure VCC-GATE

Measure GATE

1.2

2.0

V

1.0

1.5

V

Rise Time

Fall Time

GATE(H) to GATE(L) Delay

1.6V < GATE < (VCC- 2.5V),

8V < VCC < 14V

(VCC - 2.5V) > GATE > 1.6V,

8V < VCC < 14V

GATE(H) < 2V, GATE(L) > 2V,

40

80

ns

40

80

ns

8V < VCC < 14V

30

65

100

ns

GATE(L) to GATE(H) Delay GATE(L) < 2V, GATE(H) > 2V,

GATE pull-down

8V < VCC < 14V

Resistance to PGnd (note 1)

30

65

100

ns

20

50

115

kΩ

s Fault Protection

SS Charge Time

SS Pulse Period

SS Duty Cycle

SS Comp Clamp Voltage

VFB Low Comparator

VFB = 0V

VFB = 0V

(Charge Time/Period) × 100

VFB = 2.7V, VSS = 0V

Increase VFB till no SS

pulsing and normal Off-time.

1.6

3.3

5.0

ms

25

100

200

ms

1.0

3.3

6.0

%

0.50

0.95

1.10

V

0.9

1.0

1.1

V

s PWM Comparator

Transient Response

VFB = 1.2 to 5V 500ns after

GATE(H) (after Blanking time) to

GATE(H) = (VCC - 1V) to 1V,

8V < VCC < 14V

100

150

ns

3

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