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MC33765
(Rev.:2000)

Very Low Dropout/Ultra Low Noise 5 Outputs Voltage Regulator

ON Semiconductor 

MC33765

REGULATOR ELECTRICAL CHARACTERISTICS

ELECTRICAL CHARACTERISTICS (For typical values TA = 25°C, for min/max values TA = –40°C to +85°C/Max TJ = 125°C)

Characteristics

Symbol

Min

Typ

Max

Unit

Dynamic Parameters

Rise Time (1% 99%) Common Enable at ON state,

Cbypass = 10 nF, Iout at max. current

VR1, VR2, VR4, VR5 with COUT = 100 nF, TA = 25°C

VR3 with COUT = 1.0 mF, TA = 25°C

Fall Time (99% 1%) [COUT = 100 nF, IOUT = 30 mA] (Note 4.)

Overshoot (COUT = 100 nF for VR1, VR2, VR4, VR5

and COUT = 1.0 mF for VR3) at TA = 25°C

Common Enable at ON state, independent enable from OFF to ON state

ton

–

–

30

ms

–

–

150

ms

toff

–

100

–

ms

–

5

8

%

Settling Time (to ±0.1% of nominal) at TA = 25°C

Common Enable at ON state, independent enable from OFF to ON state

–

95

–

ms

Noise and Crosstalks

Noise Voltage (100 Hz < f < 100 kHz) with Cbypass = 100 nF

VR1, VR2, VR4, VR5 with COUT = 100 nF

VR3 with COUT = 1.0 mF

Static crosstalk (DC shift) between the Regulator Output, TA = 25°C (Note 5.)

Dynamic CrossTalk Attenuation between the Regulator Outputs

(f = 10 kHz), TA = 25°C (Note 6.)

Thermal Shutdown

mV RMS

–

40

–

–

25

30

–

150

200

mV

30

35

–

dB

Thermal Shutdown

–

160

–

°C

4. The Fall time is highly dependent on the load conditions, i.e. load current for a specified value of COUT.

5. Static Crosstalk is a DC shift caused by switching ON one of the outputs through independent enable to all other outputs. This parameter

is highly dependent on overall PCB layout and requires the implementation of low–noise GROUND rules (e.g. Ground plane).

6. Dynamic crosstalk is the ratio between a forced output signal to signal transferred to other outputs. This requires special device

configuration to be measured.

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