ON Semiconductor MC33765 User Manual

MC33765

l
l

s

Very Low Dropout/Ultra Low
Noise 5 Outputs Voltage
Regulator

The MC33765 is an ultra low noise, very low dropout voltage
regulator with five independent outputs which is available in
TSSOP−16 surface mount package.

The MC33765 is available in 2.8 V. The output voltage is the same
for all five outputs but each output is capable of supplying different
currents up to 150 mA for output 4. The device features a very low
dropout voltage (0.11 V typical for maximum output current), very
low quiescent current (5.0 mA maximum in OFF mode, 130 mA typical
in ON mode) and one of the output (output 3) exhibits a very low noise
level which allows the driving of noise sensitive circuitry. Internal
current and thermal limiting protections are provided.

Additionally, the MC33765 has an independent Enable input pin for
each output. It includes also a common Enable pin to shutdown the
complete circuit when not used. The Common Enable pin has the

highest priority over the five independent Enable input pins.

The voltage regulators VR1, VR2 and VR3 have a common input
voltage pin VCC1. The other voltage regulators VR4 and VR5 have a
common input voltage pin VCC2.

Features

(Note: Microdot may be in either location)

• Five Independent Outputs at 2.8V Typical, Based Upon Voltage Version

• Internal Trimmed Voltage Reference

• V

Tolerance ±3.0% over the Temperature Range −40°C to +85°C

out

• Enable Input Pin (Logic−Controlled Shutdown) for Each of the Five

Outputs

• Common Enable Pin to Shutdown the Whole Circuit

• Very Low Dropout Voltage (0.11 V Typical for Output 1, 2, 3 and 5;

0.17 V Typical for Output 4 at Maximum Current)

• Very Low Quiescent Current (Maximum 5.0 mA in OFF Mode,

Common Enable

On/Off V−Reg. 1

On/Off V−Reg. 2

On/Off V−Reg. 3

On/Off V−Reg. 4

On/Off V−Reg. 5 VCC2

130 mA Typical in ON Mode)

• Ultra Low Noise for VR3 (30 mV RMS Max, 100 Hz < f < 100 kHz)

• Internal Current and Thermal Limit

• 100 nF for VR1, VR2, VR4 and VR5 and 1.0 mF for VR3 for Stability

• Supply Voltage Rejection: 60 dB (Typical) @ f = 1.0 kHz

• These are Pb−Free Devices*

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Voltage
Thermal Resistance Junction−to−Air
Operating Ambient Temperature
Maximum Operating Junct ion Temperature
Maximum Junction Temperature
Storage Temperature Range

Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.

*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting

Techniques Reference Manual, SOLDERRM/D.

R

T

V

CC

q

T
T

Jmax

T

stg

JA

A

J

5.3

140

−40 to +85
125
150

−60 to +150

V

°C/W

°C
°C
°C
°C

Device Package* Shipping

MC33765DTB TSSOP−16 96 Units/Rail
MC33765DTBG TSSOP−16 96 Units/Rail
MC33765DTBR2 TSSOP−16
MC33765DTBR2G TSSOP−16 2500 Tape & Ree

*This package is inherently Pb−Free.
†For information on tape and reel specifications,

including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.

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TSSOP−16

DTB SUFFIX

1

A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package

CASE 948F

PIN CONNECTIONS

116

Bypass

15

14

13

12

11

MC33765

10

9

GND

2

3

4

5

6

7

8

(Top View)

ORDERING INFORMATION

MARKING
DIAGRAM

16

MC33

765

ALYW G

G

1

Not Connected

VCC1

Output V−Reg. 1

Output V−Reg. 2

Output V−Reg. 3

Output V−Reg. 4

Output V−Reg. 5

†

2500 Tape & Ree

© Semiconductor Components Industries, LLC, 2006

June, 2006 − Rev. 4

1 Publication Order Number:

MC33765/D

ON/OFF 1

BYPASS

100 nF

(3)

VCC1

Enable

Voltage

Reference

Simplified Block Diagram

(15) (2)CE

Common

1.25 V

MC33765

Enable

−

+

Current

Limit

Temp.

Shut.

V

(10)

2

CC

330 nF

V

1

CC

(14)

V

1

OUT

100 nF

ON/OFF 2

ON/OFF 3

ON/OFF 4

(4)

(5)

(6)

Enable

Enable

Enable

Current

Limit

1

V

CC

−

+

Temp.

Shut.

(13)

V

100 nF

OUT

2

Current

Limit

VCC1

−

+

Temp.

Shut.

(12)

V

1.0 mF

OUT

3

Current

Limit

VCC2

−

+

Temp.

Shut.

(11)

V

100 nF

OUT

4

ON/OFF 5

GND

(7)

(8)

Enable

−

+

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2

Current

Limit

Temp.

Shut.

VCC2

(9)

V

100 nF

OUT

5

MC33765

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

CONTROL ELECTRICAL CHARACTERISTICS

ELECTRICAL CHARACTERISTICS (For typical values T

Characteristics

= 25°C, for min/max values TA = −40°C to +85°C/ Max TJ = 125°C)

A

Symbol Pin # Min Typ Max Unit

INDEPENDENT ENABLE PINS

Input Voltage Range V
Control Input Impedance
Logic “0”, i.e. OFF State

Logic “1”, i.e. ON State

ON/OFF(1−5)

V

ON/OFF(1−5)

− 0 − V

−

− −

100

2.0

−

−

−

0.5

CC

−

−

V

kW

V

COMMON ENABLE PIN

Input Voltage Range V
Control Input Impedance
Logic “0”, i.e. OFF State

Logic “1”, i.e. ON State

CE

V

CE

2 0 − V
2
2 −

100

2.0

−

−

−

0.3

CC

−

−

V

kW

V

CURRENT CONSUMPTION WITH NO LOAD

Current Consumption at Logic “0” for the complete device,

БББББББББББББББ

i.e. Common Enable and All Independent Enable pins at OFF State
Current Consumption at Logic “1” for the complete device,

i.e. Common Enable and All Independents Enable pins at ON State

БББББББББББББББ

Current Consumption at Logic “1”, Common Enable at ON State
and All Independents Enable pins at OFF State

ББББББ

ББББББ

IQ

IQ

IQ

OFF

ON1

ON2

Á

Á

−

−

−

ÁÁ

−

470

ÁÁ

130

Á

5.0

−

Á

−

mA

Á

mA

Á

mA

SUPPLY AND OUTPUT VOLTAGES, DROPOUT AND LOAD REGULATION

Supply Voltage V

CC

Regulator Output Voltage for VR1, VR2, VR3, VR4 and VR5

Dropout Voltage for VR1, VR2, VR3, VR5 (Note 1) VCC−V

Dropout Voltage for VR4 (Note 1) VCC−V
Load Regulation (TA = 25°C) Reg

MC33765 (2.8V) V

MC33765 (2.8V)

CC1, VCC2

V

OUT(1−5)

OUT

OUT4

load(1−5)

15, 10 3.0 3.6 5.3 V

14, 13, 12,

11, 9 2.7 2.8 2.85

14, 13, 12,

− 0.11 0.17 V

9

11 − 0.17 0.30 V

9, 11, 12,

− − 0.5 mV/mA

13, 14

V

MAX POWER DISSIPATION AND TOTAL DC OUTPUT CURRENT (VR1 + VR2 + VR3 + VR4 + VR5) (Note 2)

Max Power Dissipation at VCC = 5.3 V (TA = 85°C)
Max. Total RMS Output Current at VCC = 5.3 V (TA = 85°C)

Max Power Dissipation at VCC = 5.3 V (TA = 25°C)
Max. Total RMS Output Current at VCC = 5.3 V (TA = 25°C)

P

P

dmax

I

RMS

dmax

I

RMS

− −

− −

−

−

−

−

−

−

285
130

700
250

mW

mA

mW

mA

1. Typical dropout voltages have been measured at currents: Output1: 25 mA, Output2: 35 mA, Output3: 40 mA, Output4: 140 mA, Output5: 40 mA
Maximum value of dropout voltages are measured at maximum specified current.

2. See package power dissipation and thermal protection.

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MC33765

REGULATOR ELECTRICAL CHARACTERISTICS

ELECTRICAL CHARACTERISTICS (For typical values T

Characteristics Pin # Symbol Min Typ Max Unit

OUTPUT CURRENTS (Note 3)

Regulator VR1 Output Current
Regulator VR2 Output Current 13 I
Regulator VR3 Output Current 12 I
Regulator VR4 Output Current 11 I
Regulator VR5 Output Current 9 I
Current Limit for VR1, VR2, VR3, VR4, VR5

[Twice the max Output Current for each output]

EXTERNAL CAPACITORS

External Compensation Capacitors for VR1, VR2, VR4, VR5 14, 13, 11, 9 C
External Compensation Capacitors for VR3 12 C
External Compensation Capacitors ESR − − 0.05 1.0 3.0

RIPPLE REJECTIONS

Ripple Rejection VR1, VR2, VR4, VR5
(at Max. Current, 1.0 kHz, C = 100 nF)

= 25°C, for min/max values TA = −40°C to +85°C/ Max TJ = 125°C)

A

14 I

14, 13, 12,

11, 9

14, 13, 11, 9

I

(1−2, 4−5)

(DV

OUT

OUT1
OUT2
OUT3
OUT4
OUT5

MAX

4

10 − 30 mA
10 − 40 mA

0 − 50 mA
10 − 150 mA
10 − 60 mA

− 2 X I
(1−5)

OUT

0.10 − 1.0

1.0 − −

50 60 − dB

)

(DVCC)

− mA

mF
mF

W

Ripple Rejection VR1, VR2, VR4, VR5
(at Max. Current, f = 10 kHz, C = 100 nF)

Ripple Rejection of VR3
(at Max. Current, f = 1.0 kHz, C = 1.0 mF)

Ripple Rejection of VR3
(at Max. Current, f = 10 kHz, C = 1.0 mF)

Ripple Rejection of VR3
(at Max. Current, f = 100 kHz, C = 1.0 mF)

14, 13, 11, 9

12

12

12

(DV

OUT

(DVCC)

(DV

OUT

(DVCC)

(DV

OUT

(DVCC)

(DV

OUT

(DVCC)

40 45 − dB

)

50 60 − dB

)

40 45 − dB

)

18 22 − dB

)

DYNAMIC PARAMETERS

Rise Time (1% → 99%) Common Enable at ON st ate, C
VR1, VR2, VR4, VR5 with C
VR3 with C

= 1.0 mF, TA = 25°C

OUT

Fall Time (99% → 1%) [C
Overshoot (C

TA = 25°C Common Enable at ON state, independent enable from OFF to ON state

= 100 nF for VR1, VR2, VR4, VR5 and C

OUT

= 100 nF, TA = 25°C

OUT

= 100 nF, I

OUT

= 30 mA] (Note 4) t

OUT

Settling Time (to ±0.1% of nominal) at TA = 25°C
Common Enable at ON state, independent enable from OFF to ON state

bypass

= 10 nF, I

OUT

at max. current

out

= 1.0 mF for VR3) at

t

on

off

−

−

−

−

150

− 100 −

30

− − 5 8 %

−

− 95 −

ms
ms

ms

ms

NOISE AND CROSSTALKS

Noise Voltage (100 Hz < f < 100 kHz) with C
VR1, VR2, VR4, VR5 with C

= 100 nF; VR3 with C

OUT

Static crosstalk (DC shift) between the Regulator Output, TA = 25°C (Note 5) − − 150 200
Dynamic CrossTalk Attenuation between the Regulator Outputs (f = 10 kHz),

bypass

= 100 nF

OUT

= 1.0 mF

− −

−

40
25

30

−

mV RMS

mV

− 30 35 − dB

TA = 25°C (Note 6)

THERMAL SHUTDOWN

Thermal Shutdown − − 160 − °C

3. Maximum Output Currents are peak values. Total DC current have to be set upon maximum power dissipation specification. Only Output
3 has been designed to be stable at minimum current of 0 mA.

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

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

OUT

.

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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