ON NCP3064BPG 1.5 a, step-up/down/ inverting switching regulator with on/off function Datasheet

NCP3064, NCP3064B,
NCV3064
1.5 A, Step-Up/Down/
Inverting Switching
Regulator with ON/OFF
Function
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MARKING
DIAGRAMS
The NCP3064 Series is a higher frequency upgrade to the popular
MC33063A and MC34063A 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 series was
specifically designed to be incorporated in Step−Down and Step−Up
and Voltage−Inverting applications with a minimum number of
external components. The ON/OFF pin provides a low power
shutdown mode.
SOIC−8
D SUFFIX
CASE 751
8
1
3064x
ALYWG
G
1
V3064
ALYWG
G
Features
•
•
•
•
•
•
•
•
•
•
•
Input Voltage Range from 3.0 V to 40 V
Logic Level Shutdown Capability
Low Power Standby Mode, Typical 100 mA
Output Switch Current to 1.5 A
Adjustable Output Voltage Range
150 kHz Frequency Operation
Precision 2% Reference
Internal Thermal Shutdown Protection
Cycle−by−Cycle Current Limiting
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
These are Pb−Free Devices
1
NCP3064x
AWL
YYWWG
PDIP−8
P, P1 SUFFIX
CASE 626
8
1
NCV3064
AWL
YYWWG
Applications
• Step−Down, Step−Up and Inverting supply applications
• High Power LED Lighting
• Battery Chargers
ON/OFF
8
L1
Rsense
VCC
Ç
Ç
Ç
Ç
Ç
SWC
Ipk
SWE
R2
FB
GND
NCP3064
1
NCP3064
x
A
L, WL
Y, YY
W, WW
G or G
R1
D1
CT
VCC
CIN
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ON/OFF
VOUT
DFN8
MN SUFFIX
CASE 488AF
CT
GND
GND
=
=
=
=
=
=
=
NCP
3064x
ALYWG
G
NCV
3064
ALYWG
G
Specific Device Code
B
Assembly Location
Wafer Lot
Year
Work Week
Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Figure 1. Typical Buck Application Circuit
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
© Semiconductor Components Industries, LLC, 2008
November, 2008 − Rev. 4
1
Publication Order Number:
NCP3064/D
NCP3064, NCP3064B, NCV3064
SOIC−8/PDIP−8
1
Switch Collector
Switch Emitter
2
DFN8
8
ON/OFF
7
Ipk Sense
Timing Capacitor
3
6
GND
4
5
ÇÇ
ÇÇ
ÇÇ
ÇÇ
Switch Collector
Switch Emitter
Timing Capacitor
VCC
GND
Comparator
Inverting
Input
(Top View)
NOTE:
Figure 2. Pin Connections
(Top View)
ON/OFF
Ipk Sense
VCC
Comparator
Inverting
Input
EP Flag must be tied to GND Pin 4 on PCB
Figure 3. Pin Connections
8
TSD
ON/OFF
ON/OFF
EP Flag
Ç
Ç
Ç
Ç
1
Switch Collector
Bias
R
S
7
Ipk Sense
Q
Comparator
−
+
S
R
2
Q
Switch Emitter
0.2 V
Oscillator
6
CT
3
Timing Capacitor
VCC
Comparator
1.25 V
Reference
Regulator
+
−
5
4
GND
Comparator Inverting Input
Figure 4. Block Diagram
PIN DESCRIPTION
Pin No.
Pin Name
Description
1
Switch Collector
2
Switch Emitter
3
Timing Capacitor
4
GND
5
Comparator
Inverting Input
6
VCC
7
Ipk Sense
Peak Current Sense Input to monitor the voltage drop across an external resistor to limit the peak
current through the circuit
8
ON/OFF
ON/OFF Pin. Pulling this pin to High level turns the device in Operating. To switch into mode with
low current consumption this pin has to be in Low level or floating.
Internal Darlington switch collector
Internal Darlington switch emitter
Timing Capacitor Oscillator Input, Timing Capacitor
Ground pin for all internal circuits
Inverting input pin of internal comparator
Voltage supply
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NCP3064, NCP3064B, NCV3064
MAXIMUM RATINGS (measured vs. Pin 4, unless otherwise noted)
RATING
SYMBOL
VALUE
UNIT
VCC (Pin 6)
VCC
−0.3 to 42
V
Comparator Inverting Input (Pin 5)
VCII
−0.3 to VCC
V
Darlington Switch Emitter (Pin 2) (Transistor OFF)
VSWE
−0.6 to VCC
V
Darlington Switch Collector (Pin 1)
VSWC
−0.3 to 42
V
Darlington Switch Collector to Emitter (Pins 1 and 2)
VSWCE
−0.3 to 42
V
Darlington Switch Peak Current
ISW
1.5
A
Ipk Sense Voltage (Pin 7)
VIPK
−0.3 to (VCC + 0.3 V)
V
Timing Capacitor Pin Voltage (Pin 3)
VTC
−0.2 to +1.4
V
Moisture Sensitivity Level
MSL
1
Lead Temperature Soldering
Reflow (SMD Styles Only), Pb−Free Versions
TSLD
ON/OFF Pin Voltage
VON/OFF
260
(−0.3 to 25) < VCC
°C
V
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.
THERMAL CHARACTERISTIC
Rating
Symbol
Value
Unit
PDIP−8 (Note 5) Thermal Resistance Junction−to−Air
RqJA
100
°C/W
SOIC−8 (Note 5) Thermal Resistance Junction−to−Air
RqJA
180
°C/W
DFN−8 (Note 5)
RqJA
RqJA
78
14
°C/W
TSTG
−65 to +150
°C
TJ MAX
+150
°C
TJ
0 to +70
−40 to +125
°C
Thermal Resistance Junction−to−Air
Thermal Resistance Junction−to−Case
Storage temperature range
Maximum junction temperature
Operation Junction Temperature Range (Note 3)
NCP3064
NCP3064B, NCV3064
1. This device series contains ESD protection and exceeds the following tests:
Pins 1 through 8:
Human Body Model 2000 V per AEC Q100−002; 003 or JESD22/A114; A115
Machine Model Method 200 V
2. This device contains latch−up protection and exceeds 100 mA per JEDEC Standard JESD78.
3. The relation between junction temperature, ambient temperature and Total Power dissipated in IC is TJ = TA + RQ @ PD.
4. The pins which are not defined may not be loaded by external signals.
5. 1 oz copper, 1 in2 copper area.
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3
NCP3064, NCP3064B, NCV3064
ELECTRICAL CHARACTERISTICS (VCC = 5.0 V, −40°C < TJ < +125°C for NCP3064B and NCV3064, 0°C < TJ < +70°C for
NCP3064 unless otherwise specified)
Characteristic
Conditions
Min
Typ
Max
Unit
Frequency
(VPin 5 = 0 V, CT = 2.2 nF,
TJ = 25°C)
110
150
190
kHz
Discharge to Charge Current Ratio
(Pin 7 to VCC, TJ = 25°C)
5.5
6.0
6.5
−
Capacitor Charging Current
(Pin 7 to VCC, TJ = 25°C)
275
mA
Capacitor Discharging Current
(Pin 7 to VCC, TJ = 25°C)
1.65
mA
Symbol
OSCILLATOR
fOSC
IDISCHG /
ICHG
IC
IDISCH
VIPK
Current Limit Sense Voltage
(TJ = 25°C)
165
200
235
mV
(ISW = 1.0 A, TJ = 25°C)
(Note 6)
1.0
1.3
V
(VCE = 40 V)
1.0
10
mA
TJ = 25°C
1.25
OUTPUT SWITCH (Note 6)
VSWCE
Darlington Switch Collector to
Emitter Voltage Drop
IC(OFF)
Collector Off−State Current
COMPARATOR
VTH
REGLiNE
ICII in
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
V
NCP3064
−1.5
+1.5
%
NCP3064B, NCV3064
−1.5
+1.5
%
(VCC = 3.0 V to 40 V)
−6.0
2.0
6.0
mV
(Vin = Vth)
−1000
−100
1000
nA
ON/OFF FEATURE
VIH
ON/OFF Pin Logic Input Level High
VOUT = Nominal Output Voltage
TJ = 25°C
TJ = −40°C to +125°C
2.2
2.4
−
−
−
−
V
VIL
ON/OFF Pin Logic Input Level Low
VOUT = 0 V
TJ = 25°C
TJ = −40°C to +125°C
−
−
−
−
1.0
0.8
V
IIH
ON/OFF Pin Input Current
ON/OFF Pin = 5 V (ON)
TJ = 25°C
15
mA
IIL
ON/OFF Pin Input Current
ON/OFF Pin = 0 V (OFF)
TJ = 25°C
1.0
mA
TOTAL DEVICE
Supply Current
(VCC = 5.0 V to 40 V,
CT = 2.2 nF, Pin 7 = VCC,
VPin 5 > Vth, Pin 2 = GND,
remaining pins open)
ISTBY
Standby Quiescent Current
ON/OFF Pin = 0 V (OFF)
TJ = 25°C
TJ = −40°C to +125°C
TSHD
Thermal Shutdown Threshold
160
°C
Hysteresis
10
°C
ICC
TSHDHYS
7.0
85
100
100
mA
mA
6. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
7. The VIPK (Sense) Current Limit Sense Voltage is specified at static conditions. In dynamic operation the sensed current turn−off value
depends on comparator response time and di/dt current slope. See the Operating Description section for details.
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NCP3064, NCP3064B, NCV3064
300
CT = 2.2 nF
TJ = 25°C
145
FREQUENCY (kHz)
250
200
150
100
140
135
130
125
50
0
VOLTAGE DROP (V)
150
120
0 1 2 3 4 5 6 7 8 9 1011 12131415161718192021
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
−40
0
5
10
30
35
Figure 6. Oscillator Frequency vs. Supply
Voltage
40
1.3
1.2
1A
0.75 A
0.5 A
1.25 A
ICE = 0.25 A
0.75 A
1.1
−20
0
20
40
60
80
100
120
1.25 A
0.9
0.5 A
0.8
ICE = 0.25 A
0.6
−40
140
−20
1.21
40
60
80
100
120
140
ON/OFF COMP. THRESHOLD VOLTAGE (V)
1.23
20
20
40
60
80
100
120
140
Figure 8. Common Emmitter Configuration Outp
Darlington Switch Voltage Drop vs. Temperatur
1.25
0
0
TJ, JUNCTION TEMPERATURE (°C)
1.27
−20
1A
1.0
0.7
1.29
COMP. THRESHOLD VOLTAGE (V)
25
Figure 5. Oscilator Frequency vs. Timing
Capacitor CT
Figure 7. Emitter Follower Configuration Output
Darlington Switch Voltage Drop vs. Temperature
−40
20
VCC, SUPPLY VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
1.19
15
CT, CAPACITANCE (nF)
VOLTAGE DROP (V)
OSCILATOR FREQUENCY (kHz)
350
1.6
1.5
1.4
1.3
1.2
1.1
1
−40
TJ, JUNCTION TEMPERATURE (°C)
−20
0
20
40
60
80
100
120
TJ, JUNCTION TEMPERATURE (°C)
Figure 9. Comparator Threshold Voltage vs.
Temperature
Figure 10. ON/OFF Comparator Threshold
Voltage vs. Temperature
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5
140
NCP3064, NCP3064B, NCV3064
450
STANDBY SUPPLY CURRENT (mA)
Vipk, CURRENT LIMIT SENSE
VOLTAGE (V)
0.20
0.19
0.18
0.17
0.16
0.15
−40
−20
0
20
40
60
80
100
120
140
400
350
300
250
200
150
100
50
0
0
5
10
15
20
25
30
35
40
TJ, JUNCTION TEMPERATURE (°C)
VIN, INPUT VOLTAGE (V)
Figure 11. Current Limit Sense Voltage vs.
Temperature
Figure 12. Standby Current vs. Supply Voltage
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NCP3064, NCP3064B, NCV3064
INTRODUCTION
capacitor. When the output voltage level reaches nominal,
the output switch next cycle turning on is inhibited. The
feedback comparator will enable the switching immediately
when the load current causes the output voltage to fall below
nominal. Under these conditions, output switch conduction
can be enabled for a partial oscillator cycle, a partial cycle
plus a complete cycle, multiple cycles, or a partial cycle plus
multiple cycles.
The NCP3064 is a monolithic power switching regulator
optimized for dc to dc converter applications. The
combination of its features enables the system designer to
directly
implement
step−up,
step−down,
and
voltage−inverting converters with a minimum number of
external components. Potential applications include cost
sensitive consumer products as well as equipment for
industrial markets. A representative block diagram is shown
in Figure 4.
Oscillator
The oscillator frequency and off−time of the output switch
are programmed by the value selected for the timing
capacitor CT. Capacitor CT is charged and discharged by a
1 to 6 ratio internal current source and sink, generating a
positive going sawtooth waveform at Pin 3. This ratio sets
the maximum tON/(tON + tOFF) of the switching converter as
6/(6 + 1) or 0.857 (typical).
The oscillator peak and valley voltage difference is
500 mV typically. To calculate the CT capacitor value for the
required oscillator frequency, use the equation found in
Figure 15. An Excel® based design tool can be found at
www.onsemi.com on the NCP3064 product page.
Operating Description
The NCP3064 is a hysteric, dc−dc converter that uses a
gated oscillator to regulate output voltage. In general, this
mode of operation is some what analogous to a capacitor
charge pump and does not require dominant pole loop
compensation for converter stability. The Typical Operating
Waveforms are shown in Figure 13. The output voltage
waveform shown is for a step−down converter with the
ripple and phasing exaggerated for clarity. During initial
converter startup, the feedback comparator senses that the
output voltage level is below nominal. This causes the
output switch to turn on and off at a frequency and duty cycle
controlled by the oscillator, thus pumping up the output filter
Figure 13. Typical Operating Waveform
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NCP3064, NCP3064B, NCV3064
Peak Current Sense Comparator
inductor pins and with decreasing inductor value. It is
recommended to check the real max peak current in the
application at worst conditions to be sure that the maximum
peak current will never get over the 1.5 A Darlington Switch
Current maximum rating.
With a voltage ripple gated converter operating under
normal conditions, output switch conduction is initiated by
the Voltage Feedback comparator and terminated by the
oscillator. Abnormal operating conditions occur when the
converter output is overloaded or when feedback voltage
sensing is lost. Under these conditions, the Ipk Current
Sense comparator will protect the Darlington output Switch.
The switch current is converted to a voltage by inserting a
fractional W resistor, RSC, in series with VCC and the
Darlington output switch. The voltage drop across RSC is
monitored by the Current Sense comparator. If the voltage
drop exceeds 200 mV with respect to VCC, the comparator
will set the latch and terminate output switch conduction on
a cycle−by−cycle basis. This Comparator/Latch
configuration ensures that the Output Switch has only a
single on−time during a given oscillator cycle.
Thermal Shutdown
Internal thermal shutdown circuitry is provided to protect
the IC in the event that the maximum junction temperature
is exceeded. When activated, typically at 160°C, the Output
Switch is disabled. The temperature sensing circuit is
designed with 10°C hysteresis. The Switch is enabled again
when the chip temperature decreases to at least 150°C
threshold. This feature is provided to prevent catastrophic
failures from accidental device overheating. It is not
intended to be used as a replacement for proper
heat−sinking.
Output Switch
Real
Vturn−off on
Rs Resistor
Vipk(sense)
The output switch is designed in a Darlington
configuration. This allows the application designer to
operate at all conditions at high switching speed and low
voltage drop. The Darlington Output Switch is designed to
switch a maximum of 40 V collector to emitter voltage and
current up to 1.5 A
I1
di/dt slope
Io
I through the
Darlington
Switch
t_delay
ON/OFF Function
The ON/OFF function disables switching and puts the part
into a low power consumption mode. A PWM signal up to
1 kHz can be used to pulse the ON/OFF and control the
output. Pulling this pin below the threshold voltage (~1.4 V)
or leaving it open turns the regulator off and has a standby
current <100 mA. Pulling this pin above 1.4 V (up to 25 V
max) allows the regulator to run in normal operation. If the
ON/OFF feature is not needed, the ON/OFF pin can be
connected to the input voltage VCC, provided that this
voltage does not exceed 25 V.
Figure 14. Current Sense Waveform
The VIPK(Sense) Current Limit Sense Voltage threshold is
specified at static conditions. In dynamic operation the
sensed current turn−off value depends on comparator
response time and di/dt current slope.
Real Vturn−off on Rsc resistor
Vturn_off = Vipk(sense) + Rs*(tdelay*di/dt)
Typical Ipk comparator response time tdelay is 350 ns. The
di/dt current slope is growing with voltage difference on the
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NCP3064, NCP3064B, NCV3064
APPLICATIONS
It is possible to create applications with external
transistors. This solution helps to increase output current and
helps with efficiency, still keeping the cost of materials low.
Another advantage of using the external transistor is higher
operating frequency, which can go up to 250 kHz. Smaller
size of the output components such as inductor and capacitor
can be used then.
Figures 16, 20 and 24 show the simplicity and flexibility
of the NCP3064. Two main converter topologies are
demonstrated with actual test data shown below the circuit
diagrams.
Figure 15 gives the relevant design equations for the key
parameters. Additionally, a complete application design aid
for the NCP3064 can be found at www.onsemi.com.
(See Notes 8, 9, 10)
ton
toff
Step−Down
Step−Up
Voltage−Inverting
Vout ) VF
Vin * VSWCE * Vout
Vout ) VF * Vin
Vin * VSWCE
|Vout| ) VF
Vin * VSWCE
ton
toff
ton
toff
ton
ton
toff
f ǒton ) 1Ǔ
f ǒton ) 1Ǔ
t
f ǒton ) 1Ǔ
t
off
t
off
CT
off
*6
CT + 381.6 @ 10 * 343 @ 10 *12
fosc
ǒ
Ǔ
ǒ
Ǔ
IL(avg)
Iout
t
Iout on ) 1
toff
t
Iout on ) 1
toff
Ipk (Switch)
DI
IL(avg) ) L
2
DI
IL(avg) ) L
2
DI
IL(avg) ) L
2
RSC
0.20
Ipk (Switch)
0.20
Ipk (Switch)
0.20
Ipk (Switch)
L
* Vout
ǒVin * VSWCE
Ǔ ton
DIL
ǒVin *DIVLSWCEǓ ton
ǒVin *DIVLSWCEǓ ton
Vripple(pp)
DIL
Vout
Ǹǒ
1
8 f CO
VTH
Ǔ ) (ESR)
2
2
[
ǒRR2 ) 1Ǔ
ton Iout
) DIL @ ESR
CO
VTH
1
ǒRR2 ) 1Ǔ
1
[
ton Iout
) DIL @ ESR
CO
VTH
ǒRR2 ) 1Ǔ
1
8. VSWCE − Darlington Switch Collector to Emitter Voltage Drop, refer to Figures 7, 5, 8 and 9.
9. VF − Output rectifier forward voltage drop. Typical value for 1N5819 Schottky barrier rectifier is 0.4 V.
10. The calculated ton/toff must not exceed the minimum guaranteed oscillator charge to discharge ratio.
Figure 15. Design Equations
The Following Converter Characteristics Must Be Chosen:
Vin − Nominal operating input voltage.
Vout − Desired output voltage.
Iout − Desired output current.
DIL − Desired peak−to−peak inductor ripple current. For maximum output current it is suggested that DIL be chosen to be
less than 10% of the average inductor current IL(avg). This will help prevent Ipk (Switch) from reaching the current limit threshold
set by RSC. If the design goal is to use a minimum inductance value, let DIL = 2(IL(avg)). This will proportionally reduce
converter output current capability.
f − Maximum output switch frequency.
Vripple(pp) − Desired peak−to−peak output ripple voltage. For best performance the ripple voltage should be kept to a low
value since it will directly affect line and load regulation. Capacitor CO should be a low equivalent series resistance (ESR)
electrolytic designed for switching regulator applications.
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NCP3064, NCP3064B, NCV3064
Input
ON/OFF
L1
ON
R9
10k
IC1
R1
R15
VIN +
ON/OFF
SWC
Ipk
SWE
VCC
C1
220mF
+
C2
0.1mF
NCP3064
SOIC
COMP
VOUT
47mH
R2
12k0
R3
3k9
C8
C9
0.1mF
220mF
CT
GND
+
D1
R4
2k4
C10
2n2
GND
GND
Figure 16. Typical Buck Application Schematic
Table 1. TESTED PARAMETERS
Parameter
Input Voltage
(V)
Output Voltage
(V)
Input Current
(A)
Output Current
(A)
Value
10 − 16
3.3
Max. 0.6 A
Max. 1.25
Table 2. BILL OF MATERIAL
Designator
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer
Part Number
R1
1
Resistor
0.15W
1%
1206
Susumu
RL1632R-R150-F
R2
1
Resistor
12k
1%
1206
ROHM
MCR18EZHF1202
R3
1
Resistor
3k9
1%
1206
ROHM
MCR18EZHF3901
R4
1
Resistor
2k4
1%
1206
ROHM
MCR18EZHF4701
R9
1
Resisitor
10k
1%
1206
ROHM
MCR18EZHF1002
C1
1
Capacitor
220mF/35V
20%
F
PANASONIC
EEEFP1V221AP
C2, C8
2
Capacitor
100nF
10%
1206
Kemet
C1206C104K5RACTU
C9
1
Capacitor
220mF/6V
20%
F8
SANYO
6SVP220M
C10
1
Capacitor
2.2nF
10%
1206
Kemet
C1206C222K5RACTU
L1
1
Inductor
47mH
20%
DO3316
CoilCraft
DO3316P-473MLB
D1
1
Diode
MBRS230
−
SMB
ON Semiconductor
MBRS230LT3G
IC
1
Switching
Regulator
NCP3064
−
SOIC8
ON Semiconductor
NCP3064DR2G
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NCP3064, NCP3064B, NCV3064
Figure 17. Buck Demoboard Layout
Figure 18. Buck Demoboard Photo
75
Vin = 10 V
EFFICIENCY (%)
70
Vin = 16 V
65
60
55
50
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
OUTPUT CURRENT (A)
Figure 19. Efficiency vs. Output Current for
Buck Demoboard
Table 3. TEST RESULTS
Line Regulation
Vin = 9 V to 12 V, Vout = 3.3 V, Iout = 800 mA
8 mV
Load Regulation
Vin = 12 V, Vout = 3.3 V, Iout = 800 mA
10 mV
Output Ripple
Vin = 12 V, Vout = 3.3 V, Iout = 100 mA to 800 mA
Efficiency
Vin = 12 V, Vout = 3.3 V, Iout = 500 mA
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11
< 85 mV Peak - Peak
70%
NCP3064, NCP3064B, NCV3064
L1
Input
VOUT
100mH
D2
ON/OFF
ON
R9
10k0
R1
0R15
VIN +
ON/OFF
SWC
Ipk
SWE
VCC
C1
150mF
R5
18k0
IC1
C2
100n
NCP3064
SOIC
COMP
C5
0.1mF
CT
C6
+
330mF
R4
1k0
GND
C10
2n2
GND
GND
Figure 20. Typical Boost Application Schematic
Table 4. TESTED PARAMETERS
Parameter
Input Voltage
(V)
Output Voltage
(V)
Input Current
(A)
Output Current
(A)
Value
10 − 16
24
Max. 1.25
Max. 0.6
Table 5. BILL OF MATERIAL
Designator
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer Part
Number
R1
1
Resistor
0.15W
1%
1206
Susumu
RL1632R-R150-F
R5
1
Resistor
18k
1%
1206
ROHM
MCR18EZHF1802
R6
1
Resistor
1k
1%
1206
ROHM
MCR18EZHF1001
R9
1
Resisitor
10k
1%
1206
ROHM
MCR18EZHF1002
C1
1
Capacitor
150mF/16V
20%
F8
SANYO
6SVP150M
C2, C5
2
Capacitor
100nF
10%
1206
Kemet
C1206C104K5RACTU
C6
1
Capacitor
330mF/25V
20%
SMD
Panasonic
EEE-FK1E331GP
C10
1
Capacitor
2.2nF
10%
1206
Kemet
C1206C222K5RACTU
L2
1
Inductor
100mH
20%
DO3316
CoilCraft
DO3316P-104MLB
D2
1
Diode
MBRS230
−
SMB
ON Semiconductor
MBRS230LT3G
IC
1
Switching
Regulator
NCP3064
−
SOIC8
ON Semiconductor
NCP3064DR2G
Figure 21. Boost Demoboard Layout
Figure 22. Boost Demoboard Photo
http://onsemi.com
12
NCP3064, NCP3064B, NCV3064
Table 6. TEST RESULTS
Line Regulation
Vin = 9 V to 15 V, Vout = 24 V, Iout = 250 mA
3 mV
Load Regulation
Vin = 12 V, Vout = 24 V, Iout = 50 to 350 mA
5 mV
Output Ripple
Vin = 12 V, Vout = 24 V, Iout = 50 to 350 mA
< 350 mV Peak - Peak
Efficiency
Vin = 12 V, Vout = 24 V, Iout = 200 mA
86%
95
90
Vin = 16 V
EFFICIENCY (%)
85
Vin = 10 V
80
75
70
65
60
55
50
45
0 0.04
0.12
0.2
0.28
0.36
0.44
OUTPUT CURRENT (A)
Figure 23. Efficiency vs. Output Current
Current for Boost Demoboard
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13
NCP3064, NCP3064B, NCV3064
Q1
Q2
D2
ON/OFF
ON
L1
R9
10k
Input
R14 ...... R16
R7
10k
IC1
R1
4 x R15
VIN +
ON/OFF
SWC
Ipk
SWE
NCP3064
C2
+100n
COMP
R5
3k9
D1
C5
CT
VCC
C1
m15
VOUT
22mH
R5
1k
0.1mF
R6
1k
GND
C9
+
1mF
R4
2k4
GND
GND
C4
1n8
C10
2n2
Figure 24. Typical Buck with External Transistor Application Schematic
Table 7. TESTED PARAMETERS
Parameter
Input Voltage
(V)
Output Voltage
(V)
Input Current
(A)
Output Current
(A)
Value
10 – 16
3.3
Max. 1.25
Max. 3
Table 8. BILL OF MATERIAL
Designator
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer
Part Number
R1, R14,
R15, R16
4
Resistor
0.15R
1%
1206
Susumu
RL1632R-R150-F
R5, R6
2
Resistor
1k
1%
1206
ROHM
MCR18EZHF1001
R3
1
Resistor
3k9
1%
1206
ROHM
MCR18EZHF3901
R4
1
Resistor
2k4
1%
1206
ROHM
MCR18EZHF2401
R7;R9
2
Resistor
10k
1%
1206
ROHM
MCR18EZHF1002
C1
1
Capacitor
270mF
20%
10 x 16
PANASONIC
EEUFC1V271
C4
1
Capacitor
1n8
10%
1206
Kemet
C1206C182K5RACTU
C2, C8
2
Capacitor
100nF
10%
1206
Kemet
C1206C104K5RACTU
C9
1
Capacitor
1mF
20%
F8
SANYO
4SA1000M
C10
1
Capacitor
2.2nF
10%
1206
Kemet
C1206C222K5RACTU
Q1
1
Transistor
MMSF7P03
−
SOIC8
ON Semiconductor
MMSF7P03HDR2G
Q2
1
Transistor NPN
MMBT489L
−
SOT-23
ON Semiconductor
MMBT489LT1G
D2
1
Diode
MBR130T
−
SOD-123
ON Semiconductor
MBR130T1G
IC1
1
Switching
Regulator
NCP3064
−
SOIC8
ON Semiconductor
NCP3064DR2G
D1
1
Diode
MBRS330T
−
SMC
ON Semiconductor
MBRS330T3G
L1
1
Inductor
22mH
20%
Coilcraft
Coilcraft
DO5040H-223MLB
http://onsemi.com
14
NCP3064, NCP3064B, NCV3064
Figure 25. Buck Demoboard with External
PMOS Transistor Layout
Figure 26. Buck Demoboard with External
PMOS Transistor Photo
90
EFFICIENCY (%)
85
Vin = 10 V
80
Vin = 16 V
75
70
65
60
0
0.5
1.0
1.5
2.0
2.5
3.0
OUTPUT CURRENT (A)
Figure 27. Efficiency vs. Output Current Current for Buck Demoboard with External PMOS Transistor
Table 9. TEST RESULTS
Line Regulation
Vin = 9 V to 15 V, Vout = 3.3 V, Iout = 2 A
8 mV
Load Regulation
Vin = 12 V, Vout = 3.3 V, Iout = 0.5 to 3.0 A
10 mV
Output Ripple
Vin = 12 V, Vout = 3.3 V, Iout = 0.5 to 3.0 A
< 300 mV Peak - Peak
Efficiency
Vin = 12 V, Vout = 3.3 V, Iout = 2 A
http://onsemi.com
15
82%
NCP3064, NCP3064B, NCV3064
If the application allows ON/OFF pin to be biased by
voltage and the power supply is not connected to Vcc pin at
the same time, then it is recommended to limit ON/OFF
current by resistor with value 10 kW to protect the NCP3064
device. This situation is mentioned in Figure 29, ON/OFF
Serial Resistor Connection.
This resistor shifts the ON/OFF threshold by about
200 mV to higher value, but the TTL logic compatibility is
kept in full range of input voltage and operating temperature
range.
The picture in Figure 24. Typical Buck Application
Schematic shows typical configuration with external PMOS
transistor. Resistor R7 connected between timing capacitor
TC Pin and SWE Pin provides a pulse feedback voltage.
The pulse feedback approach increases the operating
ffrequency by up to 50%. Figure 28, Oscillator Frequency
vs. Timing Capacitor with Pulse Feedback, shows the
impact to the oscillator frequency at buck converter for Vin
= 12 V and Vout = 3.3 V with pulse feedback resistor
R7 = 10 kW. It also creates more regular switching
waveforms with constant operating frequency which results
in lower ripple voltage and improved efficiency.
OSCILLATOR FREQUENCY (kHz)
450
400
350
300
250
200
With Pulse
Feedback
150
100
50 Without Pulse
Feedback
0
0
2
4
6
8
10
12
14
16
18
20
22
TIMING CAPACITANCE (nF)
Figure 28. Oscillator Frequency vs. Timing Capacitor with Pulse Feedback
R
ON/OFF
10k
IC1
Rsense
R15
ON/OFF
SWC
Ipk
SWE
NCP3064
VIN
VCC
+
FB
Figure 29. ON/OFF Serial Resistor Connection
http://onsemi.com
16
CT
GND
NCP3064, NCP3064B, NCV3064
ORDERING INFORMATION
Package
Shipping†
NCP3064MNTXG
DFN−8
(Pb−Free)
4000 Units / Tape & Reel
NCP3064BMNTXG
DFN−8
(Pb−Free)
4000 Units / Tape & Reel
NCP3064PG
PDIP−8
(Pb−Free)
50 Units / Rail
NCP3064BPG
PDIP−8
(Pb−Free)
50 Units / Rail
NCP3064DR2G
SOIC−8
(Pb−Free)
2500 Units / Tape & Reel
NCP3064BDR2G
SOIC−8
(Pb−Free)
2500 Units / Tape & Reel
NCV3064MNTXG
DFN−8
(Pb−Free)
4000 Units / Tape & Reel
NCV3064PG
PDIP−8
(Pb−Free)
50 Units / Rail
NCV3064DR2G
SOIC−8
(Pb−Free)
2500 Units / Tape & Reel
Device
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
http://onsemi.com
17
NCP3064, NCP3064B, NCV3064
PACKAGE DIMENSIONS
8 LEAD PDIP
CASE 626−05
ISSUE L
8
5
−B−
1
4
F
−A−
NOTE 2
L
C
J
−T−
N
SEATING
PLANE
D
H
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
M
K
G
0.13 (0.005)
M
T A
M
B
M
http://onsemi.com
18
DIM
A
B
C
D
F
G
H
J
K
L
M
N
MILLIMETERS
MIN
MAX
9.40
10.16
6.10
6.60
3.94
4.45
0.38
0.51
1.02
1.78
2.54 BSC
0.76
1.27
0.20
0.30
2.92
3.43
7.62 BSC
--10_
0.76
1.01
STYLE 1:
PIN 1.
2.
3.
4.
5.
6.
7.
8.
AC IN
DC + IN
DC - IN
AC IN
GROUND
OUTPUT
AUXILIARY
VCC
INCHES
MIN
MAX
0.370
0.400
0.240
0.260
0.155
0.175
0.015
0.020
0.040
0.070
0.100 BSC
0.030
0.050
0.008
0.012
0.115
0.135
0.300 BSC
--10_
0.030
0.040
NCP3064, NCP3064B, NCV3064
PACKAGE DIMENSIONS
SOIC−8 NB
CASE 751−07
ISSUE AJ
−X−
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
A
8
5
S
B
0.25 (0.010)
M
Y
M
1
4
−Y−
K
G
C
N
DIM
A
B
C
D
G
H
J
K
M
N
S
X 45 _
SEATING
PLANE
−Z−
0.10 (0.004)
H
D
0.25 (0.010)
M
Z Y
S
X
M
J
S
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
4.0
0.155
0.6
0.024
1.270
0.050
SCALE 6:1
mm Ǔ
ǒinches
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com
19
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.33
0.51
1.27 BSC
0.10
0.25
0.19
0.25
0.40
1.27
0_
8_
0.25
0.50
5.80
6.20
INCHES
MIN
MAX
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.050 BSC
0.004
0.010
0.007
0.010
0.016
0.050
0 _
8 _
0.010
0.020
0.228
0.244
NCP3064, NCP3064B, NCV3064
PACKAGE DIMENSIONS
8 PIN DFN, 4x4
CASE 488AF−01
ISSUE B
A
D
8X
B
PIN ONE
IDENTIFICATION
8X
b
0.15 C
0.10 C
8X
0.08 C
SEATING
PLANE
A1
8X NOTE 3
TOP VIEW
D2
4
5
0.15 C
2X
1
8
E
2X
L
ÇÇ Ç
ÇÇ Ç
ÇÇ Ç
K
E2
ÇÇÇ
Ç
DIM
A
A1
A3
b
D
D2
E
E2
e
K
L
e
0.10 C A B
0.05 C
NOTES:
1. DIMENSIONS AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.25 AND 0.30 MM FROM TERMINAL.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
BOTTOM VIEW
A
(A3)
MILLIMETERS
MIN
MAX
0.80
1.00
0.00
0.05
0.20 REF
0.25
0.35
4.00 BSC
1.91
2.21
4.00 BSC
2.09
2.39
0.80 BSC
0.20
−−−
0.30
0.50
C
SIDE VIEW
SOLDERING FOOTPRINT*
4.30
2.21
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
2.39
1
8X
0.35
DIMENSIONS: MILLIMETERS
8X
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
ÇÇ
0.63
0.40
0.80
PITCH
2.75
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
Excel is a registered trademark of Microsoft Corporation.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
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Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
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For additional information, please contact your local
Sales Representative
NCP3064/D
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