SGS Thomson Microelectronics L4936EH, L4936E Datasheet



ADVANCEDVOLTAGE REGULATOR

ENABLE AND SENSE INPUTS (EN, SI) PRO­TECTED AGAINST NEGATIVE TRANSIENTS
DOWN TO-5V

RESET THRESHOLD ADJUSTABLE FROM

3.8 TO 4.7V
EXTREMELY LOW QUIESCENT CURRENT,

65µA (LESS THAN 90µA) IN STANDBY
MODE

OPERATINGDC SUPPLY VOLTAGE RANGE
5V -28V

OPERATING TRANSIENT SUPPLY VOLT­AGE UP TO 40V

HIGHPRECISIONSTANDBYOUTPUTVOLT­AGE 5V±1% WITH 100mA CURRENT CA­PABILITY

OUTPUT 2 VOLTAGE 5V ± 2% WITH 400mA
CURRENT CAPABILITY (ADJ WIRED TO
V

)

OUT2

OUTPUT 2 VOLTAGE ADJUSTABLE BY EX­TERNAL VOLTAGEDIVIDER

OUTPUT 2 DISABLE FUNCTION FOR
STANDBYMODE

L4936E

MULTIWATT 11

ORDERING NUMBERS: L4936E (Multiwatt 11)

DESCRIPTION

The L4936E is a monolithic integrated dual volt­age regulator with two very low dropout outputs
and additionalfunctionsas power-on resetand in­put voltage sense.It is designedfor supplyingthe
microcomputer controlled systems especially in
automotiveapplications.

MULTIWATT 15

L4936EH (Multiwatt15)

PIN CONNECTIONS (Top views)

11
10

9
8
7
6
5
4
3
2
1

TAB CONNECTEDTO PIN 6

Multiwatt11

June 2000

D94AT077

OUT2
ADJ
OUT1
SO
RES
GND
EN
CT
PR
SI
VS1/VS2

TAB CONNECTEDTO PIN 6

Multiwatt15

15
14
13
12
11
10

9
8
7
6
5
4
3
2
1

D94AT078A

OUT2
ADJ
OUT1
SO
N.C.
N.C.
RES
GND
EN
N.C.
CT
PR
SI
VS1
VS2

1/11

L4936E

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

INDC

V

INTR

I

O

V

SI

I

SI

V

EN

I

EN

V

RES,VSO

I

RES,ISO

P

O

T

stg

T

j

T

JSD

Note: The circuit is ESD protected according to MIL-STD-883C
Note 2: Current forced means voltage unlimited but current limited to thespecified value

Voltageforced meansvoltage limited to the specified valueswhile the current is not limited

Note 3: Typicalvalue soldered on a PCboard with 8 cm2 copper ground plane (35mm thick)

DC Operating Supply Voltage 28 V
Transient Operating Supply Voltage (T < 400ms) -14 to 40 V
Output Current internally limited
Sense Input Voltage (VoltageForced) (note 2) -20 to 20 V
Sense Input Current (Current Forced) (note 2) ±1mA
Enable Input Voltage(Voltage Forced) (note 2) -20 to 20 V
Sense Input Current (Current Forced) (note 2)

1mA

±

Output Voltages -0.3 to 20 V
Output Currents (Output Low) 5 mA
Power Dissipation at T

Multiwatt 11 (R

heatsink = 9K/W)

th

=80°C (note 3)

amb

5W

Storage Temperature -65 to 150
Operating Junction Temperature -40 to 150
Thermal shutdownjunction temperature Output 2 will shut-down

165 °C

typically at Tj 10K lowerthan output 1

C

°

C

°

BLOCK DIAGRAM

VS1

VS2

EN

1.23V

PR

SI

REG1

REG2

RESET

OUT1

1.23V REFERENCE

OUT2

ADJ

1.23V

CT

RES

1.4V

SO

2/11

SENSE

1.23V
GND

D94AT074A

THERMAL DATA

Symbol Parameter MW 11 MW 15 Unit

R

th j-case

Note 3: Typicalvalue soldered on a PCboard with 8 cm2 copper ground plane (35mm thick)

Thermal ResistanceJunction-case 3

PIN FUNCTIONS

PIN (MW 11) PIN (MW 15) Name Function

1 1 VS1 Supply Voltage(400mA Regulator)
1 2 VS2 Supply Voltage(100mA Regulator, Reset, Sense)
2 3 S1 Sense Input
3 4 PR Reset Theresold Programming
4 5 CT Reset Delay Capacitor
5 7 EN Enable (low will activate the 400mAregulator)
6 8 GND Ground
7 9 RES Reset Output
8 12 SO Sense Output

9 13 OUT 1 100mA RegulatorOutput
10 14 ADJ Feedback of 400mA Regulator
11 15 OUT 2 400mA RegulatorOutput

6, 10, 11 NC Not Connected

L4936E

C/W

°

ELECTRICALCHARACTERISTICS

= 14V; Tj=-40 to 150°C unless otherwise specified.)

(V

S

Symbol Parameter Test Condition Min. Typ. Max. Unit

OUT 1

V

V

V

V

OL01

I

QSB

O1

DP1

LIM1

Supply Output Voltage VS= 6 to 28V;

I

= 400µA to 100mA

O1

T

125°C; I

≤

Dropoutput Voltage 1 I

Load Regulation 1 I

j

OUT1

I

OUT1
OUT1

O1

= 10mA 0.1 0.2 V
= 100mA; VS= 4.8V 0.2 0.4 V
= 1 to 100mA

= 50 to 400µA 4.8 5 5.2 V

4.9 5 5.1 V

25 mV

(after regulation setting)
Current Limit 1 VOUT1 = 0.8 to 4.5V 100 200 400 mA
Quiescent Current in Standby

Mode

2.4V (output 2 disabled)

I

≥

EN

I

= 0.1mA; VSI> 1.3V

O1

T

<85°C;RPR=0 75 µA

J

65 90

OUT 2

V

V

R

V

OL02

I

LIM2

O2

DP2

ADJ

I

Q

Output Voltage 2
ADJ connected to OUT 2

Dropoutput Voltage 2 I

Load Regulation 2 I

Enable = LOW;VS= 6 to 28V;

I

= 5 to 400mA

02

= 100mA; VS= 4.8V 0.2 0.3 V

OUT2

I

= 400mA; VS= 4.8V 0.3 0.6 V

OUT2

= 5 to 400mA

OUT1

4.9 5.1 V

50 mV

(after regulation setting)
Adjust Input Resistance 60 100 150 K
Current Limit 2 V02 = 0.8 to 4.5V 450 650 1300 mA
Quiescent Current I

OUT1

= 100mA; I

= 400mA 20 mA

OUT2

OUT1,OUT 2

V

OLi 1,2

Line Regulation VS= 6 to 28V; IO1= 1mA,

I

= 5mA,

O2

(after regulation setting)

20 mV

A

µ

Ω

3/11

L4936E

ELECTRICALCHARACTERISTICS (Continued.)

Symbol Parameter Test Condition Min. Typ. Max. Unit

ENABLE INPUT

V

ENL

V

ENH

V

ENhyst

I

EN LOW

I

EN HIGH

RESETCIRCUIT

V

RT

V

RTH

t

RD min

t

RD nom

t

RR

I

CT

I

CT

V

RESL

V

RESH

Enable Input Low Voltage

-20 1 V

(Output 2 Active)
Enable Input High Voltage 1.4 20 V
Enable Hysteresis 20 30 60 mV
Enable Input Current Low VEN= 0 -20 -8 -3
Enable Input Current High VEN= 1.1 to 7V; TJ< 130°C; -1 0 1

= 1.1 to 7V;

V

EN

T

= 130 to 150°C;

J

Reset Theresold Voltage
(note4)

RPR=

R

PR

Reset Theresold Hysteresis RPR=
Reset Pulse Delay C
Reset Pulse Delay C
Reset Reaction Time C
Pull Down Capability of the

RES
RES
RES

V

OUT1<VRT

∞

= 0 3.65 3.8 3.95 V

∞

= 47nF; tr≤ 30µs; (note 5) 40 60 100 ms
= 47nF; (note 6) 60 100 140 ms
= 47nF 10 50 150

-10 0 10 µA

4.5 VO1-0.3 VO1-0.2 V

15 40 100 mV

3615mA

Discharge circuit
Charge Current VOUT1 >VRT -1.3 -1 0.7 µA
Reset Output Low Voltage RRES = 10KΩ to VOUT1

1.5V

OUT1 ≥

=5V 1

RES

Reset Output High Leakage

V

V

0.4 V

current

A

µ

A

µ

s

µ

A

µ

SENSECOMPARATOR

V

SI

V

SIT

V

SITH

V

SOL

I

SOH

I

SI HIGH

I

SI LOW

Note :

4) The reset threshold can beprogrammed continuously from typ 3.8V to 4.7V by changing a valueof an external resistor frompin PR to GN

5) This is a minimum reset timeaccording to the hysteresis of the comparator.Delay time starts with V

6) This is thenominal reset time depending on thedischarging limit of CT(saturationvoltage) and theupper threshold of the timer comparator.
Delay time starts with V

7) The leakage of CTmust be less than 0.5mA (2V). Ifan externalresistor between CT and VOUT1is applied, the leakage current may be
increased. The external resistor should have more than 30KΩ.
for stability: Cs ≥ 1µF, C01 ≥ 10µF, C02 ≥ 10µF, ESR ≤ 5Ω (designed targetfor resistive load) For details see applicationnote.

8) For transients exceeding 20V or -20V externalprotection is required at thePins SIand EN as shown at Pin EN. The protectionproposed will

provide proper function for transients in the range of±200V. If the zener diode is omitted the external resistor should be raised to200K
to limit the current to 1mA. Withoutthe zener diode, the function 20V or -20V can not be guaran teed.

Functional Range -20 20 V
Sense Threshold Voltage Falling Edge; TJ<130°C 1.08 1.16 1.24 V

Falling Edge; T

130 to 150°C 1.05 1.16 1.29 V

J

Sense Threshold Hysteresis 10 30 60 mV
Sense Output Low Voltage V

Sense Output Leakage VSO= 5V; V
Sense Input Current High VSI= 1.1 to 7V; TJ<130°C-101

1.05V; R

≤

SI

connected to 5V; V

= 1.1to 7V; TJ130 to 150°C -10 0 10

V

SI

=10K

SO

SI ≥

Ω

S ≥ 5V

1.5V 1

0.4 V

µ
µ
µ

Sense Input Current Low VSI = 0V -20 -8 -3 µA

OUT1 exceeding VRT

OUT1 exceeding VRT

A
A
A

Ω

4/11