SI9993CS データシートの表示（PDF） - Vishay Semiconductors

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SI9993CS

12-V VCM/Spindle Motor Driver for Large Capacity HDD

Vishay Semiconductors 

Si9993CS

Vishay Siliconix

SPECIFICATIONS

Operating Conditions:

VCC = VMOT = 12 V ±10%, VDD = 5 V ±10%, VREF(IN) = VREF(OUT), RSS = RSV = 0.2 Ω ±1%,

RSRADJ = 20 kΩ ±1%, Si9942-Si9430 LITTLE FOOT Driver, FSYSCLK = 5 MHz, TA = 0 to 70°C

Limits

Parameter

Symbol

Specific Test Conditions

Mina

Typb

Spindle Motor Driver

Transconductance

Spindle Driver Input Offset

Voltage

Current Sense Comparator

Input Bias Current

PWM Constant Off-Time

Stability

Spindle Driver Input Bias

Current

BEMF Detect Input Offset

Voltage

GMSPIN

(Start-Up)

V(SPDACIN)

IB(C/S)

IB(L/S)

IMOTOR = 1 A, D5D4(REG5) = 11

IMOTOR = 0 A, D5D4(REG5) = 11

D3/D2(REG5) = 01

1.44

1.60

40

3.2

-20

BEMF Detect CM Input Range

2.5

Power-Down Spindle Motor

Break Threshold

Measured at VCLAMP, D1D0(REG1) = 11

2.4

3.0

PWM Pre-Driver for LITTLE FOOT® (Spindle Motor)

SRADJ Voltage

VSRADJ

ISRADJ = -50 µA

1.0

D2/D1(REF4) = 11

VOUT = VCLAMP - 0.4 V

-1.6

HSA/B/C Output

High Current (OFF)

IOH(HS)

VOUT = VCLAMP - 3 V, Slew Controlled Range

VOUT = VCLAMP - 10V

-1.6

-24

D2/D1(REF4) = 00

VOUT = VCLAMP - 3 V

-13

D2/D1(REF4) = 11

HSA/B/C Output

Low Current (ON)

IOL(HS)

VOUT = VCLAMP - 3 V, Slew Controlled Range

D2/D1(REF4) = 00

1.4

VOUT = 3 V

19

D2/D1(REF4) = 11

VOUT = 0.4 V

1.9

LSA/B/C Output

Low Current (OFF)

IOL(LS)

VOUT = 3 V, Slew Controlled Range

VOUT = 10V

1.7

5.0

D2/D1(REF4) = 00

VOUT = 3 V

13

D2/D1(REF4) = 11

LSA/B/C Output

High Current (ON)

IOH(LS)

VOUT = 3 V, Slew Controlled Range

D2/D1(REF4) = 00

-1.1

SENA/B/D and VCM ± Clamp

Diode Voltage

VCL

VOUT = 3 V

-7

Measured at IF = 20 mA and IF = -20 mA

0.5

Maxa

1.76

2

3.4

50

20

VCLAMP -

2

3.6

Unit

A/V

mV

µA

µs

nA

mV

V

V

mA

V

FaxBack 408-970-5600, request 70653

www.siliconix.com

S-60752–Rev. A, 05-Apr-99

5

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