L7203 查看數據表（PDF） - STMicroelectronics

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L7203

SMOOTH DRIVE SPINDLE MOTOR FOR OPTICAL DRIVE APPLICATION WITH POWER INTEGRATED

STMicroelectronics 

L7203

DC ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

BIAS

VBIAS

BIAS Output Voltage

IBmax

Max Output Current

H+, H-

VH±

H+ H- Input Voltage Range

IH±

Input Leakage Current

VOFFISR Comparator Offset

VHy

Comparator Hysteresys

MOTOR POWER STAGE

RDSON

High and Low side FET on

Resistance

IU/V/W

Spindle Output Leakage

Current

CURRENT LIMITER

VLim

Internal Reference Voltage for

current limitation

VOFFLim Comparator Offset

THERMAL PROTECTION

TS

Shutdown temperature

UNDERVOLTAGE

Vccth (fall) Undervoltage threshold (fall)

Vccth (rise) Undervoltage threshold (rise)

Vccth (hys) Undervoltage threshold (hys)

SYSTEM FREQUENCY

fsys

System frequency

SLEW RATE CONTROL

VSRC

SRC Output Voltage

ISRC

Output Current

RSRC

ISR

External Resistor on pin SRC

VISR

Input Range

Test Condition

VCC = 5V; 5mA < I < 15mA

Vin = 0, +VCC

Tj = 125; VM = 4.25V

I = 1.2A

VM = 15V

PRS = 0

PRS = 1

Min. Typ.

3.25

0

-10

-15

4

220 240

-15

130

2.9

-

-

-

-

0.1

10

20

1.25

10

0

Note 1: An SMBJIZAVCL-TR is recommended to clamp VM in case of high impedance on power supply line.

Max.

3.75

15

2.5

+10

+15

15

2

100

260

+15

170

-

3.4

-

20

34

500

2

Unit

V

mA

V

µA

mV

mV

Ω

µA

mV

mV

°C

V

V

V

MHz

MHz

V

µA

KΩ

V

FUNCTIONAL DESCRIPTION

STB-Thermal protection

Controller drive STB pin by open drain.

When Thermal Shutdown is excited, the device

force this pin LOW.

Controller will manage STB to do a re-start.

When STB is LOW all the drivers are shut off.

Hall Sensor Bias

A regulator on chip supply a 3.3V+-10% refer-

ence on pin Bias. This regulator can supply an

output current up-to 15 mA.

Figure 1.

R PULL UP

STB

OVER TEMP

D98IN880

5/13

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