LB1921 datasheet(3/10 Pages) SANYO

3 / 10 page

No. 5439-3/10

LB1921

Continued from preceding page.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

[Current Limiter Operation]

Limiter

VCC-VM

0.4

0.5

0.6

[Thermal Shutdown Operation]

Thermal shutdown operating

TSD

Design target value

150

180

°C

temperature

Hysteresis

∆TSD

°C

[FG Amplifier]

Input offset voltage

VIO (FG)

–10

+10

Input bias current

IB (FG)

–1

µA

Output high-level voltage

VOH (FG)

IFG = –2 mA

5.5

Output low-level voltage

VOL (FG)

IFG = 2 mA

1.5

FG input sensitivity

Gain: 100

Schmitt width at next stage

100

180

250

Operating frequency range

kHz

Open-loop gain

f(FG) = 2 kHz

[FGS Output]

Output saturation voltage

VO (FGS)

IO (FGS )= 2 mA

0.1

0.5

Output leakage current

IL (FGS)

VO = 5 V

µA

[Speed Discriminator]

Output high-level voltage

VOH (D)

4.0

4.3

Output low-level voltage

IOL (D)

0.8

1.1

[PLL Output]

Output high-level voltage

VOH (P)

3.2

3.5

3.8

Output low-level voltage

VOL (P)

1.2

1.5

1.8

[Counts]

512

[Lock Detector]

Output low-level voltage

VOL (LD)

ILD = 10 mA

0.15

0.5

Lock range

6.25

[Integrator]

Input bias current

IB (INT)

–0.4

+0.4

µA

Output high-level voltage

VOH (INT)

3.7

4.3

Output low-level voltage

VOL (INT)

0.8

1.2

Open-loop gain

Gain-bandwidth product

1.6

MHz

Reference voltage

–5%

VX/2

+5%

[Crystal Oscillator]

Operating frequency range

fOSC

MHz

[Start/Stop Pin]

Input high-level voltage

VIH (S/S)

4.0

Input low-level voltage

VIL (S/S)

1.5

Pull-down resistor

RD (S/S)

Ω

[Reversing Pin]

Input high-level voltage

VIH (F/R)

4.0

Input low-level voltage

VIL (F/R)

1.5

Hysteresis

∆VIN

0.5

Pull-down resistor

RD (F/R)

Ω

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