NCP706B, NCP706AB
1 A, 1% Precision Very Low
Dropout Voltage Regulator
with Enable
The NCP706B/AB are a Very Low Dropout Regulators family
which provides up to 1 A of load current and maintains excellent
output voltage accuracy of 1% including line, load and temperature
variations. The operating input voltage range from 2.4 V up to 5.5 V
makes this device suitable for Li−ion battery powered products as well
as post−regulation applications. The product is available in 3.0 V fixed
output voltage option. NCP706B/AB are fully protected against
overheating and output short circuit and includes latched OCP
protection which automatically latches−off the device in the case of a
short circuit event and the NCP706AB has internal active discharge
circuit.
Very small 8−pin XDFN8 1.6 x 1.2, 04P package makes the device
especially suitable for space constrained portable applications such as
tablets and smartphones. Parts feature active output discharge
function.
Features
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MARKING
DIAGRAM
XDFN8
CASE 711AS
XXMG
G
XX = Specific Device Code
M = Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTION
•
Operating Input Voltage Range: 2.4 V to 5.5 V
•
Fixed Output Voltage Option: 3.0 V
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Other Output Voltage Options Available on Request.
Low Quiescent Current of Typ. 200
mA
Very Low Dropout: 155 mV at I
OUT
= 1 A
±1%
Accuracy Over Load/Line/Temperature
High PSRR: 58 dB at 1 kHz
Internal Soft−Start to Limit the Inrush Current
Thermal Shutdown and Current Limit Protections
Stable with a 2.2
mF
Ceramic Output Capacitor
Active Output Discharge (NCP706AB)
Available in XDFN8 1.6 x 1.2, 04P 8−pin Package
Latched Overcurrent Protection
These are Pb−Free Devices
Tablets, Smartphones,
Wireless Handsets, Portable Media Players
Portable Medical Equipment
Other Battery Powered Applications
V
IN
= 2.4 (3.3) − 5.5 V
IN
C
IN
ON
OFF
NCP706B/AB
EN
GND
SNS
OUT
C
OUT
2.2
mF
Ceramic
V
OUT
= 3.0 V @ 1 A
OUT 1
OUT 2
N/C 3
SNS 4
(Top View)
8 IN
7 IN
6 EN
5 GND
IN 8
IN 7
EN 6
GND 5
1 OUT
2 OUT
3 N/C
4 SNS
(Bottom View)
Typical Applications
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 9 of this data sheet.
Figure 1. Typical Application Schematic
©
Semiconductor Components Industries, LLC, 2016
1
May, 2016 − Rev. 3
Publication Order Number:
NCP706B/D
NCP706B, NCP706AB
Figure 2. Simplified Internal Schematic Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
XDFN8
1
2
3
4
5
6
7
8
−
Pin Name
OUT
OUT
N/C
SNS
GND
EN
IN
IN
Exposed
Pad
This pad enhances thermal performance and is electrically connected to GND. It is recommended
that the exposed pad is connected to the ground plane on the board or otherwise left open.
Description
Regulated output voltage. A minimum 2.2
mF
ceramic capacitor is needed from this pin to ground to
assure stability.
Not connected. This pin can be tied to ground to improve thermal dissipation.
Remote sense connection. This pin should be connected to the output voltage rail.
Power supply ground.
Enable pin. Driving EN over 0.9 V turns on the regulator. Driving EN below 0.4 V puts the regulator
into shutdown mode. In case of the NCP706B/AB pulling the EN low resets the OCP latch state.
Input pin. A small capacitor is needed from this pin to ground to assure stability.
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NCP706B, NCP706AB
ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Output Voltage
Enable Input
Output Short Circuit Duration
Maximum Junction Temperature
Storage Temperature
ESD Capability, Human Body Model (Note 2)
ESD Capability, Machine Model (Note 2)
Symbol
V
IN
V
OUT
V
EN
t
SC
T
J(MAX)
T
STG
ESD
HBM
ESD
MM
Value
−0.3 V to 6 V
−0.3 V to V
IN
+ 0.3 V
−0.3 V to V
IN
+ 0.3 V
Indefinite
150
−55 to 150
2000
200
Unit
V
V
V
s
°C
°C
V
V
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.
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per EIA/JESD22−A114
ESD Machine Model tested per EIA/JESD22−A115
Latch−up Current Maximum Rating tested per JEDEC standard: JESD78
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, XDFN8 1.6x1.2, 04P
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
Value
160
Unit
°C/W
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3
NCP706B, NCP706AB
ELECTRICAL CHARACTERISTICS − VOLTAGE VERSION 3.0 V
−40°C
≤
T
J
≤
125°C; V
IN
= V
OUT(NOM)
+ 0.3 V or 3.3 V, whichever is greater; I
OUT
= 10 mA, C
IN
= C
OUT
= 2.2
mF,
V
EN
= 0.9 V, unless
otherwise noted. Typical values are at T
J
= +25°C. (Note 3)
Parameter
Operating Input Voltage
Undervoltage lock−out
Output Voltage Accuracy
Line Regulation
Load Regulation
Load Transient
Dropout voltage (Note 4)
Output Current Limit
Quiescent current
Ground current
Shutdown current
EN Pin High Threshold
EN Pin Low Threshold
EN Pin Input Current
Overcurrent Protection Blanking
Time (Note 5)
Turn−on Time
Power Supply Rejection Ratio
V
IN
rising, I
OUT
= 0
V
OUT
+ 0.3 V
≤
V
IN
≤
4.5 V, I
OUT
= 0 – 1 A
V
OUT
+ 0.3 V
≤
V
IN
≤
4.5 V, I
OUT
= 10 mA
I
OUT
= 0 mA to 1 A, V
IN
= 3.3 V
I
OUT
= 10 mA to 1 A in 10
ms,
V
IN
= 3.5 V
C
OUT
= 10
mF
I
OUT
= 1 A, V
OUT(nom)
= 3.0 V
V
OUT
= 90% V
OUT(nom)
I
OUT
= 0 mA
I
OUT
= 1 A
V
EN
= 0 V, V
IN
= 2.0 to 5.5 V
V
EN
Voltage increasing
V
EN
Voltage decreasing
V
EN
= 5.5 V
V
OUT
= V
OUT(nom)
down to V
OUT
= 0V
(Output Shorted to GND)
C
OUT
= 2.2
mF,
from assertion EN pin to 98%
V
out(nom)
V
IN
= 3.5 V + 200 mVpp
modulation, V
OUT
= 3.0 V
I
OUT
= 0.5 A, C
OUT
= 4.7
mF
f = 100 Hz
f = 1 kHz
f = 10 kHz
V
EN_HI
V
EN_LO
I
EN
t
BLANK
t
ON
PSRR
0.9
0.4
300
10
150
65
58
52
300
160
20
60
700
nA
ms
ms
dB
Test Conditions
Symbol
V
IN
UVLO
V
OUT
Reg
LINE
Reg
LOAD
Tran
LOAD
V
DO
I
CL
I
Q
I
GND
1.1
170
200
0.1
1
230
Min
2.4
1.2
2.97
1.6
3.0
2
2
±120
155
230
Typ
Max
5.5
1.9
3.03
Unit
V
V
V
mV
mV
mV
mV
A
mA
mA
mA
V
Output Noise Voltage
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Active Output Discharge
(NCP706AB only)
V
OUT
= 3.0 V, V
IN
= 4.0 V, I
OUT
= 0.5 A
f = 100 Hz to 100 kHz
Temperature increasing from T
J
= +25°C
Temperature falling from T
SD
V
EN
≤
0.4 V, V
IN
= 4.5 V
V
NOISE
T
SD
T
SDH
R
DIS
mV
rms
°C
°C
W
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. Performance guaranteed over the indicated operating temperature range by design and/or characterization production tested at T
J
= T
A
=
25_C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
4. Characterized when V
OUT
falls 90 mV below the regulated voltage at V
IN
= 3.3 V, I
OUT
= 10 mA.
5. For more information see APPLICATIONS INFORMATION section on page 8.
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NCP706B, NCP706AB
TYPICAL CHARACTERISTICS
3.004
3.002
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.000
2.998
2.996
2.994
2.992
−40 −20
V
IN
= 3.3 V
I
OUT
= 10 mA
C
OUT
= 2.2
mF
V
OUT(NOM)
= 3.0 V
0
20
40
60
80
100
120
TEMPERATURE (°C)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0
1.0
2.0
3.0
INPUT VOLTAGE (V)
V
IN
= V
EN
T
A
= 25°C
C
OUT
= 2.2
mF
V
OUT(NOM)
= 3.0 V
I
OUT
= 10 mA
I
OUT
= 50 mA
I
OUT
= 250 mA
I
OUT
= 500 mA
4.0
5.0
Figure 3. Output Voltage vs. Temperature
Figure 4. Output Voltage vs. Input Voltage
240
QUIESCENT CURRENT (mA)
220
200
180
160
T
A
= −40°C
140
120
I
OUT
= 0
C
OUT
= 2.2
mF
V
OUT(NOM)
= 3.0 V
T
A
= 125°C
T
A
= 25°C
260
240
220
200
180
160
140
0.0
C
OUT
= 2.2
mF
T
A
= 25°C
V
OUT(NOM)
= 3.0 V
0.1
0.2
0.3 0.4 0.5 0.6 0.7
OUTPUT CURRENT (A)
0.8
0.9 1.0
V
IN
= 3.3 V
V
IN
= 4.0 V
V
IN
= 5.0 V
V
IN
= 3.5 V
V
IN
= 4.5 V
V
IN
= 5.5 V
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
5.0
5.5
Figure 5. Quiescent Current vs. Input Voltage
GROUND CURRENT (mA)
Figure 6. Ground Current vs. Output Current
1.8
SHORT CURRENT LIMIT (A)
DROPOUT VOLTAGE (mV)
1.7
1.6
1.5
1.4
1.3
1.2
V
OUT
= 0
V
EN
= V
IN
C
OUT
= 2.2
mF
T
A
= 25°C
V
OUT(NOM)
= 3.0 V
200
180
160
140
120
100
80
60
40
20
3.0
3.5
4.0
4.5
5.0
5.5
0
0
0.2
0.4
0.6
0.8
1
OUTPUT CURRENT (A)
−40°C
V
EN
= V
IN
C
OUT
= 2.2
mF
V
OUT(NOM)
= 3.0 V
125°C
25°C
INPUT VOLTAGE (V)
Figure 7. Short Current Limitation vs. Input
Voltage
Figure 8. Dropout Voltage vs. Output Current
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