ON Semiconductor NCV47700 User Manual

NCV47700

Low Dropout Regulator -

Adjustable, Adjustable Current Limit

5 V to 20 V

The NCV47700 is a 350 mA output current integrated low dropout regulator designed for use in harsh automotive environments. It includes wide operating temperature and input voltage ranges. The device is offered with adjustable voltage versions available in 6% output voltage accuracy. It has a high peak input voltage tolerance and reverse input voltage protection. It also provides overcurrent protection, overtemperature protection and enable for control of the state of the output voltage. The integrated current sense feature provides diagnosis and system protection functionality. The current limit of the device is adjustable by resistor connected to CSO pin. Voltage on CSO pin is proportional to output current.

Features

• Adjustable Voltage Version (from 5 V to 20 V) ±6% Output Voltage

for ±3% Output Voltage Accuracy see NCV47701 Specification

• Enable Input (5 V Logic Compatible Thresholds)

for 3.3 V Logic Compatible Thresholds see NCV47710 or NCV47711 Specification

• Adjustable Current Limit (from 10 mA to 350 mA) with 10%

accuracy

• Protection Features:

♦ Current Limitation ♦ Thermal Shutdown ♦ Reverse Input Voltage

• This is a Pb−Free Device

Typical Applications

• Audio and Infotainment System

• Instrument Cluster

• Navigation

• Satellite Radio

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MARKING

DIAGRAMS

SOIC−8

Exposed Pad

PD SUFFIX

CASE 751AC

SOIC−8

D SUFFIX

CASE 751

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

47700 ALYW

PIN CONNECTIONS

ADJ

CSO

SOIC−8 EP, SOIC−8

out

NCGND NCEN

ORDERING INFORMATION

See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet.

NCV47700

GND

1 m F

*Required if usage of low ESR output capacitor C

Regulator Stability Considerations section.

out

ADJ

CSO

1 m F

CSO

Figure 1. Application Schematic

October, 2019 − Rev. 3

Cb*

CSO

is demand, see

out

22 mF

1 Publication Order Number:

NCV47700/D

NCV47700

GND

VOLTAGE

REFERENCE

REF1 REF2

PASS DEVICE

AND

CSO

= I

out

/ 100

out

CURRENT MIRROR

ENABLE

SATURATION

PROTECTION

THERMAL

SHUTDOWN

TSD

REF1

1.275 V

REF2

2.55 V

CSO

ADJ

TSD

Figure 2. Simplified Block Diagram

PIN FUNCTION DESCRIPTION

Pin No.

SOIC−8 EP

1 1 ADJ Adjustable Voltage Setting Input. See Application Section for more details.

2 2 GND Power Supply Ground.

3 3 EN Enable Input; low level disables the IC.

4 4 CSO Current Sense Output, Current Limit setting and Output Current value information.

5 5 V

6 6 NC Not Connected

7 7 NC Not Connected

8 8 V

EPAD − EPAD Connect to ground potential or leave unconnected.

Pin No. SOIC−8

Pin Name Description

See Application Section for more details.

out

Positive Power Supply Input.

Regulated Output Voltage.

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NCV47700

ABSOLUTE MAXIMUM RATINGS (Note 1)

Rating

Input Voltage V

Enable Input Voltage V

Adjustable Input Voltage V

CSO Voltage V

Output Voltage V

Junction Temperature T

Storage Temperature T

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

1. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.

ESD CAPABILITY (Note 2)

Rating

ESD Capability, Human Body Model ESD

ESD Capability, Machine Model ESD

2. This device series incorporates ESD protection and is tested by the following methods:

ESD Human Body Model tested per AEC−Q100−002 (JS−001−2010)

ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115) Field Induced Charge Device Model ESD characterization is not performed on plastic molded packages with body sizes < 50mm the inability of a small package body to acquire and retain enough charge to meet the minimum CDM discharge current waveform characteristic defined in JEDEC JS−002−2014.

LEAD SOLDERING TEMPERATURE AND MSL (Note 3)

Rating

Moisture Sensitivity Level SOIC−8 EP

SOIC−8

3. For more information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D

THERMAL CHARACTERISTICS

Rating Symbol Value Unit

Thermal Characteristics, SOIC−8 EP (single layer PCB)

Thermal Resistance, Junction−to−Air (Note 4) Thermal Reference, Junction−to−Lead (Note 4)

Thermal Characteristics, SOIC−8 EP (4 layers PCB)

Thermal Resistance, Junction−to−Air (Note 4) Thermal Reference, Junction−to−Lead (Note 4)

Thermal Characteristics, SOIC−8 (single layer PCB)

Thermal Resistance, Junction−to−Air (Note 4) Thermal Reference, Junction−to−Lead (Note 4)

Thermal Characteristics, SOIC−8 (4 layers PCB)

Thermal Resistance, Junction−to−Air (Note 4) Thermal Reference, Junction−to−Lead (Note 4)

4. Values based on copper area of 645 mm2 (or 1 in2) of 1 oz copper thickness and FR4 PCB substrate. Single layer − according to JEDEC51.3, 4 layers − according to JEDEC51.7.

RECOMMENDED OPERATING RANGES

Rating Symbol Min Max Unit

Input Voltage (Note 5) V

Output Current Limit (Note 6) I

Junction Temperature T

Nominal Output Voltage V

Current Sense Output (CSO) Capacitor C

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability.

5. Minimum V

6. Corresponding R

= 5.5 V or (V

CSO

+ 0.5 V), whichever is higher.

out_nom

is in range from 25 kW down to 728 W.

Symbol Min Max Unit

ADJ

CSO

out

STG

−42 45 V

−0.3 10 V

−0.3 7 V

−1 40 V

−40 150 °C

−55 150 °C

Symbol Min Max Unit

HBM

−2 2 kV

−200 200 V

due to

Symbol Min Max Unit

MSL 2

−

°C/W

θJA

ψJL

70 19

°C/W

θJA

ψJL

29 12

°C/W

θJA

ψJL

121

°C/W

θJA

ψJL

LIM

out_nom

CSO

77 52

5.5 40 V

10 350 mA

−40 150 °C

5.0 20 V

1.0 4.7

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NCV47700

ELECTRICAL CHARACTERISTICS V

and Max values are valid for temperature range −40°C ≤ T statistical correlation. Typical values are referenced to T

Parameter

= 13.5 V, VEN = 5 V, R

≤ 150°C unless otherwise noted and are guaranteed by test design or

= 25°C.

Test Conditions Symbol Min Typ Max Unit

CSO

= 0 W, C

= 1 mF, Cin = 1 mF, C

CSO

REGULATOR OUTPUT

Output Voltage (Accuracy %)

Vin = (V

Line Regulation Vin = (V

Load Regulation I

Dropout Voltage (Note 7) I

= 5 mA to 350 mA Reg

out

= 150 mA, VDO = Vin − V

out

out_nom

+ 1 V) to 40 V, I

+ 1 V) to (V

out_nom

out

= 5 mA to 350 mA V

out

+ 20V), I

= 5mA Reg

out

DISABLE AND QUIESCENT CURRENTS

Disable Current

Quiescent Current, Iq = Iin − I

VEN = 0 V V

outIout

= 0 V, TJ = 25°C

= 1 mA, Vin = (V

= 350 mA, Vin = (V

+ 8.5 V) I

out_nom

+ 8.5 V) I

out_nom

CURRENT LIMIT PROTECTION

Current Limit

= 0.9 x V

out

out_nom

, Vin = (V

+ 8.5 V) I

out_nom

PSRR & NOISE

Power Supply Ripple Rejection

Output Noise Voltage

f = 100 Hz, 0.5 V

p−p

, I

f = 10 Hz to 100 kHz, C

= 5 mA, Cin = none

out

= 10 nF, I

out

= 5 mA

ENABLE

Enable Input Threshold Voltage

≤

Logic Low (OFF) Logic High (ON)

out out

0.1 V

≥

0.9 x V

out_nom

Enable Input Current VEN = 5 V I

Turn On Time from Enable ON to 90% of V

out_nom

= 100 mA, C

out

= 27 kW

= 10 nF, R1 = 82 kW,

OUTPUT CURRENT SENSE

CSO Voltage Level at Current Limit

CSO Transient Voltage Level

CSO Current to Output Current Ratio (Note 8)

CSO Current at No Load Current

= 0.9 x V

out

= 1 kW

CSO

= 4.7 mF, R

CSO

to 350 mA, t

= 2 V, I

CSO

out_nom

= 0 V, I

CSO

= 5V)

, (V

out_nom

= 1 ms

out

out_nom

= 1 kW, I

CSO

= 10 mA to 350 mA,

= 0 mA, (V

out_nom

= 5 V)

pulse from 10 mA

out

= 5 V)

REVERSE CURRENT

Reverse Current (Note 9)

Vin = 12 V, V

= 14 V I

out

THERMAL SHUTDOWN

Thermal Shutdown Temperature

7. Measured when the output voltage V

8. Not guaranteed in dropout.

= 5 mA T

out

has dropped −2% from the nominal value obtained at Vin = V

out

9. Values based on design and/or characterization.

= 22 mF, ESR = 1.5 W, Min

out

−6 − 6 %

− 0.1 2.0 %

− 0.14 2.8 %

− 250 500 mV

−

− 150 230

− 23 50 mA

400 − − mA

out

line

load

DIS

LIM

PSRR − 70 − dB

th(EN)

CSO_Ilim

CSO

CSO/Iout

CSO_off

out_rev

− 100 −

0.8

−

2.4

2.7

−

3.5

2.0 8.0 20

− 1.6 − ms

2.346

(−8 %)

2.55 2.754 (+8 %)

− − 3.0 V

−

(−10%)

(1/100) −

(+10%)

− − 10

−40 −25 − mA

150 − 195 °C

+ 8.5 V.

out_nom

rms

−

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NCV47700

TYPICAL CHARACTERISTICS

1.32 Vin = 13.5 V

1.31

out

= 5 mA

1.30

1.29

1.28

1.27

1.26

, REFERENCE VOLTAGE (V)

1.25

REF1

1.24

−40 −20 0 20 40 60 80 100 160120 140 TJ, JUNCTION TEMPERATURE (°C)

0.40

0.35

0.30

0.25

0.20

0.15

0.10

, QUIESCENT CURRENT (mA)

0.05

0 5 10 15 20 25 4030 35

, INPUT VOLTAGE (V)

Figure 3. Reference Voltage vs. Temperature Figure 4. Quiescent Current vs. Input Voltage

TJ = 25°C

= 5 mA

out

out_nom

= 5 V

, OUTPUT VOLTAGE (V)

out

13579

0246810

, INPUT VOLTAGE (V)

Figure 5. Output Voltage vs. Input Voltage

TJ = 25°C

= 4.7 kW

out

out_nom

= 5 V

−1

−2

−3

−4

−5

, INPUT CURRENT (mA)

−6

−7

−8

−45 −40 −35 −30 −25 −20 −5−15 −10 1005

, INPUT VOLTAGE (V)

Figure 6. Input Current vs. Input Voltage

(Reverse Input Voltage)

TJ = 25°C

= 5 mA

out

out_nom

= 5 V

800

Vin = 13.5 V

700

out_nom

= 5 V

600

500

400

TJ = 150°C

TJ = 25°C

300

200

, DROPOUT VOLTAGE (mV)

100

0 50 100 150 200 250 300 350

, OUTPUT CURRENT (mA)

out

TJ = −40°C

Figure 7. Dropout vs. Output Current Figure 8. Output Current Limit vs. Input Voltage

1400

1300

1200

1100

1000

900

800

, OUTPUT CURRENT LIMIT (mA)

700

LIM

600

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= 4.5 V

out

out_nom

= 5 V

TJ = −40°C

TJ = 25°C

TJ = 150°C

0 5 10 15 20 25 30 35

, INPUT VOLTAGE (V)

40 45

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