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NCP3163BMNR2G

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
© Semiconductor Components Industries, LLC, 2010
April, 2010 − Rev. 7
1 Publication Order Number:
NCP3163/D
NCP3163, NCV3163
3.4 A, Step-Up/Down/
Inverting 50-300 kHz
Switching Regulator
The NCP3163 Series is a performance enhancement to the popular
MC33163 and MC34163 monolithic DC−DC converters. These
devices consist of an internal temperature compensated reference,
comparator, controlled duty cycle oscillator with an active current
limit circuit, driver and high current output switch. This controller was
specifically designed to be incorporated in step−down, step−up, or
voltage−inverting applications with a minimum number of external
components. The NCP3163 comes in an exposed pad package which
can greatly increase the power dissipation of the built in power switch.
Features
• Output Switch Current in Excess of 3.0 A
• 3.4 A Peak Switch Current
• Frequency is Adjustable from 50 kHz to 300 kHz
• Operation from 2.5 V to 40 V Input
• Externally Adjustable Operating Frequency
• Precision 2% Reference for Accurate Output Voltage Control
• Driver with Bootstrap Capability for Increased Efficiency
• Cycle−by−Cycle Current Limiting
• Internal Thermal Shutdown Protection
• Low Voltage Indicator Output for Direct Microprocessor Interface
• Exposed Pad Power Package
• Low Standby Current
• NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
• These are Pb−Free Devices
+
16
9
10
11
12
13
14
15
8
7
6
5
4
3
2
LVI
Oscillator
+
+
-
Current
Limit
Figure 1. Typical Buck Application Circuit
(Bottom View)
-
+
+
+
-
1
V
CC
V
CC
V
CC
V
in
C
in
Thermal
V
out
+
C
O
R
S
Q
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAMS
NCx3163y = Specific Device Code
x = P or V
y = blank or B
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G or G = Pb−Free Package
1
16
SOIC−16W
EXPOSED PAD
PW SUFFIX
CASE 751AG
http://onsemi.com
16
1
NCx3163yPW
AWLYYWWG
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
18−LEAD DFN
MN SUFFIX
CASE 505
1
NCx3163y
AWLYYWW G
G
11
8
18
(Note: Microdot may be in either location)
NCP3163, NCV3163
http://onsemi.com
2
16
9
10
11
12
13
14
15
8
7
6
5
4
3
2
LVI
Oscillator
+
+
-
Current
Limit
Figure 2. Representative Block Diagram
(Bottom View)
-
+
+
+
-
1
V
CC
V
CC
V
CC
Thermal
R
S
Q
Driver Collector
Switch Collector
0.25 V
Switch Emitter
Bootstrap Input
Voltage Feedback 1
Voltage Feedback 2
LVI Output
Gnd
I
PKsense
V
CC
R
SC
Timing Capacitor
2.0 mA
7.0 V
60
Q1
Q2
1.125 V
15 k
1.25 V
Feedback
Comparator
Shutdown
C
T
R
DT
45 k
Latch
+
-
= Sink Only
Positive True Logic
PIN FUNCTION DESCRIPTION
SOIC16 DFN18 PIN NAME DESCRIPTION
1 15 LVI Output This pin will sink current when FB1 and FB2 are less than the LVI threshold (V
th
).
2 16 Voltage Feedback 2 Connecting this pin to a resistor divider off of the output will regulate the application
according to the V
out
design equation in Figure 22.
3 17 Voltage Feedback 1 Connecting this pin directly to the output will regulate the device to 5.05 V.
4 18 GND Ground pin for all internal circuits and power switch.
6 1 Timing Capacitor Connect a capacitor to this pin to set the frequency. The addition of a parallel resist-
or will decrease the maximum duty cycle and increase the frequency.
7 3 V
CC
Power pin for the IC.
8 4 I
pk
Sense When (V
CC
−V
IPKsense
) > 250 mV the circuit resets the output driver on a pulse by
pulse basis.
9 5 Drive Collector Voltage driver collector
10,11 6,7,8,9 Switch Collector Internal switch transistor collector
14,15 10,11,12,13 Switch Emitter Internal switch transistor emitter
16 14 Bootstrap Input Connect this pin to V
CC
for operation at low V
CC
levels. For some topologies, a
series resistor and capacitor can be utilized to improve the converter efficiency.
5,12,13 2 No Connect These pins have no connection.
Exposed
Pad
Exposed
Pad
Exposed Pad The exposed pad beneath the package must be connected to GND (pin 4). Addi-
tionally, using proper layout techniques, the exposed pad can greatly enhance the
power dissipation capabilities of the NCP3163.
NCP3163, NCV3163
http://onsemi.com
3
MAXIMUM RATINGS (Note 1)
Rating
Symbol Value Unit
Power Supply Voltage V
CC
0 to +40 V
Switch Collector Voltage Range V
CSW
−1.0 to +40 V
Switch Emitter Voltage Range V
ESW
−2.0 to +40 V
Switch Collector to Emitter Voltage V
CESW
+40 V
Switch Current I
SW
3.4 A
Driver Collector Voltage (Pin 8) V
CC
−1.0 to +40 V
Driver Collector Current (Pin 8) I
CC
150 mA
Bootstrap Input Current Range I
BST
−100 to +100 mA
Current Sense Input Voltage Range V
IPKSNS
(V
CC
− 7.0) to (V
CC
+ 1.0) V
Feedback and Timing Capacitor Input Voltage Range V
in
−1.0 to +7.0 V
Low Voltage Indicator Output Voltage Range V
CLVI
−1.0 to +40 V
Low Voltage Indicator Output Sink Current I
CLVI
10 mA
Power Dissipation and Thermal Characteristics
Thermal Characteristics
Thermal Resistance, Junction−to−Case
Thermal Resistance, Junction−to−Air
R
q
JC
R
q
JA
15
56
°C/W
Storage Temperature Range T
stg
−65 to +150 °C
Maximum Junction Temperature T
Jmax
+150 °C
Operating Ambient Temperature (Note 3)
NCP3163
NCP3163B
NCV3163
T
A
0 to +70
−40 to +85
−40 to +125
°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 MIL−STD−883, Method 3015.
Machine Model Method 200 V.
Charged Device Model 750 V for corner pins and 500 V for others (according to AEC−Q100).
2. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.
3. Maximum package power dissipation limits must be observed. Maximum Junction Temperature must not be exceeded.
4. The pins which are not defined may not be loaded by external signals.
116
15
14
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
LVI Output
Voltage Feedback 2
Voltage Feedback 1
GND
Timing Capacitor
V
CC
I
pk
Sense
Bootstrap Input
Switch
Emitter
N/C
Switch Collector
Driver Collector
PIN CONNECTIONS
N/C
GND
Voltage Feedback 1
LVI Output
Bootstrap Input
Switch Emitter
Switch Emitter
Switch Emitter
Switch Emitter
Voltage Feedback 2
Timing Capacitor
N/C
V
CC
I
pk
Sense
Switch Collector
Switch Collector
Switch Collector
Switch Collector
Driver Collector
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
17
18
Note: Pin 18 must be tied to EP Flag on PCB
GND
EP Flag
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

NCP3163BMNR2G

Mfr. #:
Buy NCP3163BMNR2G
Manufacturer:
ON Semiconductor
Description:
Switching Voltage Regulators DFN 18EG 5X6X.9MM
Lifecycle:
New from this manufacturer.
Delivery:
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