NCP693
1A CMOS Low-Dropout
Voltage Regulator
The NCP693 series of fixed output low dropout linear regulators are
designed for portable battery powered applications with high output
current requirement up to 1 A. Each device contains a voltage
reference unit, an error amplifier, a PMOS power transistor, resistors
for setting output voltage, a current limit circuits for over−current and
thermal−shutdown. A standby mode with ultra low supply current can
be realized with the chip enable function.
The device is housed in the DFN 1.8x2, 0.50P surface mount
package. Standard voltage versions are 0.8 V, 1.0 V, 1.2 V, 2.5 V and
3.3 V.
Features
http://onsemi.com
MARKING
DIAGRAM
XXX
XMM
UDFN6, 1.8x2, 0.5P
CASE 517BA
XXXX
MM
1
•
•
•
•
•
•
•
•
•
Maximum Operating Voltage of 6.5 V
Low Output Voltage Option down to 0.8 V
High Accuracy Output Voltage of 1.0%
Built−in Auto Discharge Function for D Version
These are Pb−Free Devices
Battery Powered Instruments
Hand−Held Instruments
Camcorders and Cameras
Portable communication equipments
= Specific Device Code
= Lot Number
Typical Applications
PIN DESCRIPTION
Vout 1
Vout 2
GND 3
(Top View)
1
2
3
(Top View)
6 Vin
5 Vin
4 CE
6
5
4
ORDERING AND MARKING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
©
Semiconductor Components Industries, LLC, 2010
March, 2010
−
Rev. 1
1
Publication Order Number:
NCP693/D
NCP693
Vin
Vin
Vout
Vout
Vin
Vin
Vout
Vout
Vref
Vref
CE
Current Limit &
Thermal Shutdown
GND
CE
Current Limit &
Thermal Shutdown
GND
Version H (NCP693HMNxxTCG)
Version D (NCP693DMNxxTCG)
Figure 1. Internal Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
EP
Pin Name
V
out
V
out
GND
CE
V
in
V
in
GND
Regulated output voltage.
Regulated output voltage.
Power supply ground.
This input is used to place the device into low−power standby. When this input is pulled low, the device
is disabled. If this function is not used, Enable should be connected to V
in
.
Positive power supply input voltage.
Positive power supply input voltage.
Power supply ground.
Description
MAXIMUM RATINGS
Rating
Input Voltage
Enable Voltage
Output Voltage
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature
Symbol
V
in
V
CE
V
out
T
J
T
A
T
stg
Value
7
−0.3
to V
in
−0.3
to V
in
+ 0.3
+150
−40
to +85
−55
to +125
Unit
V
V
V
°C
°C
°C
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.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per (JEDEC 22−A114−B)
Machine Model Method 200 V
THERMAL CHARACTERISTICS
Rating
Junction−to−Ambient
PSIJ−Lead 2
Power Dissipation
NOTE:
Symbol
R
qJA
Y
J−L2
P
D
Test Conditions
1 oz Copper Thickness, 100 mm
2
1 oz Copper Thickness, 100 mm
2
Typical Value
114
25
880
Unit
°C/W
°C/W
mW
Single component mounted on an 80 x 80 x 1.5 mm FR4 PCB with stated copper head spreading area. Using the following
boundary conditions as stated in EIA/JESD 51−1, 2, 3, 7, 12.
http://onsemi.com
2
NCP693
ELECTRICAL CHARACTERISTICS
(V
in
= V
out(nom)
+ 1.0 V, V
CE
= V
in
, C
in
= 2.2
mF,
C
out
= 2.2
mF,
T
A
= 25°C,
unless otherwise noted)
Characteristic
Output Voltage (T
A
= 25°C, I
out
= 10 mA)
0.8 V
1.0 V
1.2 V
2.5 V
3.3 V
Output Voltage (T
A
=
−
40°C to 85°C, I
out
= 10 mA)
0.8 V
1.0 V
1.2 V
2.5 V
3.3 V
Output Current
Input Voltage
Line Regulation (V
in
= V
out
+ 1.0 V to 6.5 V, I
out
= 10 mA)
Load Regulation (I
out
= 1 mA to 300 mA, V
in
= V
out
+ 2.0 V)
Load Regulation (I
out
= 1 mA to 1 A, V
in
= V
out
+ 2.0 V)
Supply Current (I
out
= 0 A, V
in
= 6.5 V)
Standby Current (V
CE
= 0 V, V
in
= 6.5 V)
Short Current Limit (V
out
= 0 V)
Output Voltage Temperature Coefficient
Enable Input Threshold Voltage
(Voltage Increasing, Output Turns On, Logic High)
(Voltage Decreasing, Output Turns Off, Logic Low)
Enable Pulldown Current
Drop Output Voltage (T
A
= 25°C, I
out
= 300 mA)
0.8 V
1.0 V
1.2 V
2.5 V
3.3 V
Drop Output Voltage (T
A
= 25°C, I
out
= 1 A)
0.8 V
1.0 V
1.2 V
2.5 V
3.3 V
Ripple Rejection (Ripple 200 mV
pp
, I
out
= 100 mA, f = 1 kHz)
Output Noise (BW = 10 Hz to 100 kHz, I
out
= 1 mA)
Thermal Shutdown Temperature/Hysteresis
R
DS(on)
of additional output transistor (D version only)
V
in
−V
out
Symbol
V
out
Min
0.785
0.985
1.185
2.475
3.267
0.760
0.960
1.160
2.435
3.214
Typ
0.8
1.0
1.2
2.5
3.3
0.8
1.0
1.2
2.5
3.3
1
1.6
−
−
−
0.05
20
80
65
0.15
250
−
1.0
−
$100
−
−
0.3
0.670
0.450
0.300
0.150
0.130
1.150
1.000
0.870
0.500
0.430
70
45
165/30
30
0.780
0.610
0.500
0.310
0.170
1.650
1.450
1.380
1.100
0.650
−
−
0.4
6.5
0.1
40
120
90
0.6
Max
0.815
1.015
1.215
2.525
3.333
0.827
1.027
1.227
2.545
3.359
Unit
V
V
out
V
I
out
V
in
Reg
line
Reg
load03
Reg
load1
I
ss
I
stby
I
sh
T
c
V
thCE
A
V
%/V
mV
mV
mA
mA
mA
ppm/°C
V
mA
V
V
in
−V
out
V
PSRR
V
noise
T
shd
/Hyst
R
DS(on)
dB
mVrms
°C
W
2. Maximum package power dissipation limits must be observed.
3. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
http://onsemi.com
3
NCP693
APPLICATIONS INFORMATION
A typical application circuit for the NCP693 series is
shown in Figure 2.
Input Decoupling (C1)
A 2.2
mF
capacitor either ceramic or tantalum is
recommended and should be connected as close as possible
to the pins of NCP693 device. Higher values and lower ESR
will improve the overall line transient response.
Output Decoupling (C2)
(NCP693DMNxxTCG) have additional circuitry in order to
reach the turn−off speed faster than normal type. When the
mode is into standby with CE signal, auto discharge
transistor turns on.
Hints
The minimum decoupling value is 2.2
mF
and can be
augmented to fulfill stringent load transient requirements.
The regulator accepts ceramic chip capacitors as well as
tantalum devices. If a tantalum capacitor is used, and its ESR
is large, the loop oscillation may result. Because of this,
select C2 carefully considering its frequency characteristics.
Larger values improve noise rejection and load regulation
transient response.
Enable Operation
Please be sure the V
in
and GND lines are sufficiently wide.
If their impedance is high, noise pickup or unstable
operation may result.
Set external components, especially the output capacitor,
as close as possible to the circuit, and make leads as short as
possible.
Thermal
The enable pin CE will turn on or off the regulator. These
limits of threshold are covered in the electrical specification
section of this data sheet. If the enable is not used then the
pin should be connected to V
in
. The D version devices
As power across the NCP693 increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material, and also the ambient
temperature effect the rate of temperature rise for the part.
This is stating that when the NCP693 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power dissipation applications.
Figure 2. Typical Application Circuit
http://onsemi.com
4
NCP693
0.9
0.8
OUTPUT VOLTAGE (V)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
OUTPUT CURRENT (A)
1.4
1.6
V
in
= 1.4 V
1.6 V
2.0 V
2.5 V
T
A
= 25°C
OUTPUT VOLTAGE (V)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
OUTPUT CURRENT (A)
1.4
1.6
V
in
= 1.8 V
3.0 V
2.4 V
T
A
= 25°C
Figure 3. Output Voltage vs. Output Current
NCP693xMN08TCG
3.0
T
A
= 25°C
2.5
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.0
1.5
1.0
0.5
0.0
0.0
V
in
= 2.9 V
3.8 V
3.3 V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.0
0.0
Figure 4. Output Voltage vs. Output Current
NCP693xMN12TCG
V
in
= 3.6 V
5.0 V
4.3 V
T
A
= 25°C
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Figure 5. Output Voltage vs. Output Current
NCP693xMN25TCG
70.0
60.0
Figure 6. Output Voltage vs. Output Current
NCP693xMN33TCG
70.0
60.0
SUPPLY CURRENT (mA)
50.0
40.0
30.0
20.0
10.0
SUPPLY CURRENT (mA)
50.0
40.0
30.0
20.0
10.0
0.0
I
out
= 0 V
0
1
2
3
4
5
INPUT VOLTAGE (V)
6
7
0.0
I
out
= 0 V
0
1
2
3
4
5
INPUT VOLTAGE (V)
6
7
Figure 7. Supply Current vs. Input Voltage
NCP693xMN08TCG
Figure 8. Supply Current vs. Input Voltage
NCP693xMN12TCG
http://onsemi.com
5
模拟与混合信号
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
