SI9993CS datasheet(5/16 Pages) VISHAY

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Si9993CS

Vishay Siliconix

FaxBack 408-970-5600, request 70653

S-60752–Rev. A, 05-Apr-99

www.siliconix.com

Spindle Motor Driver

Transconductance

GMSPIN

(Start-Up)

IMOTOR = 1 A, D5D4(REG5) = 11

1.44

1.60

1.76

A/V

Spindle Driver Input Offset

Voltage

V(SPDACIN)

IMOTOR = 0 A, D5D4(REG5) = 11

Current Sense Comparator

Input Bias Current

IB(C/S)

µA

PWM Constant Off-Time

Stability

D3/D2(REG5) = 01

3.2

3.4

µs

Spindle Driver Input Bias

Current

IB(L/S)

BEMF Detect Input Offset

Voltage

-20

BEMF Detect CM Input Range

2.5

VCLAMP -

Power-Down Spindle Motor

Break Threshold

Measured at VCLAMP, D1D0(REG1) = 11

2.4

3.0

3.6

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

SRADJ Voltage

VSRADJ

ISRADJ = -50 µA

1.0

HSA/B/C Output

High Current (OFF)

IOH(HS)

D2/D1(REF4) = 11

VOUT = VCLAMP - 0.4 V

-1.6

VOUT = VCLAMP - 3 V, Slew Controlled Range

-1.6

VOUT = VCLAMP - 10V

-24

D2/D1(REF4) = 00

VOUT = VCLAMP - 3 V

-13

HSA/B/C Output

Low Current (ON)

IOL(HS)

D2/D1(REF4) = 11

VOUT = VCLAMP - 3 V, Slew Controlled Range

1.4

D2/D1(REF4) = 00

VOUT = 3 V

LSA/B/C Output

Low Current (OFF)

IOL(LS)

D2/D1(REF4) = 11

VOUT = 0.4 V

1.9

VOUT = 3 V, Slew Controlled Range

1.7

VOUT = 10V

5.0

D2/D1(REF4) = 00

VOUT = 3 V

LSA/B/C Output

High Current (ON)

IOH(LS)

D2/D1(REF4) = 11

VOUT = 3 V, Slew Controlled Range

-1.1

D2/D1(REF4) = 00

VOUT = 3 V

-7

SENA/B/D and VCM ± Clamp

Diode Voltage

VCL

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

0.5

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

Parameter

Symbol

Specific Test Conditions

Limits

Unit

Mina

Typb

Maxa

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