Datasheet NCP1403SNT1G Datasheet
NCP1403
15 V/50 mA PFM Step-Up
DC-DC Converter
The NCP1403 is a monolithic PFM step-up DC-DC converter. This
device is designed to boost a single Lithium or two cell AA/AAA
battery voltage up to 15 V (with internal MOSFET) output for
handheld applications. A pullup Chip Enable feature is built with this
device to extend battery-operating life. Besides, the device can also be
incorporated in step-down, and voltage-inverting configurations.
This device is available in space-saving TSOP-5 package.
Features
•82% Efficiency at V
•78% Efficiency at V
•Low Operating Current of 19 mA (No Switching)
•Low Shutdown Current of 0.3 mA
•Low Startup Voltage of 1.3 V Typical at 0 mA
•Output Voltage up to 15 V with Built-in 16 V MOSFET Switch
•PFM Switching Frequency up to 300 kHz
•Chip Enable
•Low Profile and Minimum External Parts
•Micro Miniature TSOP-5 Package
•Pb-Free Package is Available
= 15 V, I
OUT
= 15 V, I
OUT
= 50 mA, VIN = 5.0 V
OUT
= 30 mA, VIN = 3.6 V
OUT
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1
TSOP-5
SN SUFFIX
CASE 483
MARKING DIAGRAM AND
PIN CONNECTIONS
CE
FB
VDD
1
G
2
3
5
DCEAYWG
LX
GND
4
Typical Applications
•LCD Bias
•Personal Digital Assistants (PDA)
•Digital Still Camera
•Handheld Games
•Hand-held Instrument
(Top View)
DCE =Specific Device Marking
A = Assembly Location
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device Package Shipping
NCP1403SNT1 TSOP-5 3000/Tape & Reel
NCP1403SNT1G TSOP-5
(Pb-Free)
†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.
3000/Tape & Reel
†
© Semiconductor Components Industries, LLC, 2007
May, 2007 - Rev. 6
1 Publication Order Number:
NCP1403/D
NCP1403
V
1.8 V to 5.5 V
V
IN
2.7 V to 5.5 V
C
4.7 mF
10 V
Enable
IN
Enable
1
C
1
10 mF
L
47 mH
+
CE
1
FB
2
VDD
3
NCP1403
LX
5
750 pF to
2000 pF
GND
4
Figure 1. Typical Step-Up Application Circuit 1
CE
1
FB
2
VDD
3
L
22 mH
NCP1403
LX
GND
D MBR0520LT1
5
4
D MBR0520LT1
C
C
R
FB1
R
FB2
C
2
2.2 mF
16 V
ZD
+
V
OUT
C
2
33
mF
+ 0.8
V
OUT
15 V
R
FB1
ǒ
) 1
R
FB2
White LED x 4
Ǔ
Figure 2. Typical Step-Up Application Circuit 2
LX VDD
VLx Limit
PFM ON/OFF
Timing Control
Driver
Soft Start
Comparator
Figure 3. Representative Block Diagram
PFM
CE
UVLO
-
+
Vref
GND
FB
LED
+
0.8V
R
S
I
R
S
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2
NCP1403
PIN FUNCTION DESCRIPTIONS
Pin Symbol Description
1 CE Chip Enable Pin
1. The chip is enabled if a voltage which is equal to or greater than 0.9 V is applied.
2. The chip is disabled if a voltage which is less than 0.3 V is applied.
3. The chip will be enabled if it is left floating.
2 FB PFM comparator inverting input, and is connected to off-chip resistor divider which sets output voltage.
3 VDD Power supply pin for internal circuit.
4 GND Ground pin.
5 LX External inductor connection pin.
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage (Pin 3) V
DD
Input/Output Pin
LX (Pin 5)
LX Peak Sink Current
FB (Pin 2)
V
LX
I
LX
V
FB
CE (Pin 1)
Input Voltage Range
Input Current Range
V
CE
I
CE
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance Junction-to-Air
Operating Ambient Temperature Range T
Operating Junction Temperature Range T
Storage Temperature Range T
P
D
R
q
JA
A
J
stg
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 (HBM) "2.0 kV per JEDEC standard: JESD22-A114 for all pins except LX pin.
Human Body Model (HBM) "1.5 kV for LX pin.
Machine Model (MM) "200 V per JEDEC standard: JESD22-A115 for all pins.
2. Latchup Current Maximum Rating: "150 mA per JEDEC standard: JESD78.
3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J-STD-020A.
-0.3 to 6.0 V
-0.3 to 16.0
600
mA
-0.3 to 6.0
-0.3 to 6.0
150
500
250
mA
mW
°C/W
-40 to +85 °C
-40 to +150 °C
-55 to +150 °C
V
V
V
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NCP1403
ELECTRICAL CHARACTERISTICS (V
= 15 V, TA =25°C, for min/max values unless otherwise noted.)
OUT
Characteristic Symbol Min Typ Max Unit
ON/OFF TIMING CONTROL
Minimum Off Time (V
= 3.0 V, VFB = 0 V) t
DD
Maximum On Time (Current not asserted) t
Maximum Duty Cycle D
Minimum Startup Voltage (I
= 0 mA) V
OUT
Minimum Startup Voltage Temperature Coefficient (TA = -40 to +85°C) DV
Minimum Supply Voltage (I
= 0 mA) V
OUT
Soft-Start Time t
LX (PIN 5)
Internal Switch Voltage (Note 4) V
LX Pin On-State Sink Current (VLX = 0.4 V, V
Voltage Limit (When VLX reaches V
switch protection circuit)
LXLIM
= 3.0 V) I
DD
, the LX switch is turned off by the LX
Off-State Leakage Current (VLX = 16 V) I
CE (PIN 1)
CE Input Voltage (V
= 3.0 V, VFB = 0 V)
DD
High State, Device Enabled
Low State, Device Enabled
CE Input Current
High State, Device Enabled (V
Low State, Device Enabled (VDD = 5.5 V, VCE = V
= VCE = 5.5 V)
DD
FB
= 0 V)
TOTAL DEVICE
Supply Voltage V
Feedback Voltage V
Feedback Pin Bias Current (VFB = 0.8 V) I
Operating Current 1 (V
FB
Operating Current 2 (VDD = V
Off-state Current (V
= 5.0 V, VCE = 0 V, internal 100 nA pullup current source) I
DD
4. Recommend maximum V
= 0 V, V
OUT
= V
DD
= V
CE
FB
up to 15 V.
= 3.0 V) I
CE
= 3.0 V, Not switching) I
off
on
MAX
start
hold
SS
LX
V
LXLIM
LKG
V
CE(high)
V
CE(low)
I
CE(high)
I
CE(low)
DD
FB
DD1
DD2
OFF
start
LX
FB
0.8 1.3 1.5
4.0 6.0 8.4
75 83 91 %
- 1.3 1.8 V
- 1.6 - mV/°C
- 1.2 1.7 V
0.5 10 - ms
0.5 - 16 V
100 130 - mA
0.55 0.75 1.0 V
- 0.1 1.0
0.9
-
-0.5
-0.5
-
-
0
-0.1
-
0.3
0.5
0.5
1.2 - 5.5 V
0.76 0.8 0.84 V
- 15 30 nA
- 130 200
- 19 25
- 0.3 0.8
ms
ms
mA
V
V
mA
mA
mA
mA
mA
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NCP1403
TYPICAL CHARACTERISTICS
17.0
16.5
16.0
15.5
15.0
14.5
, OUTPUT VOLTAGE (V)
14.0
OUT
V
13.5
13.0
14.0
13.5
13.0
12.5
12.0
11.5
, OUTPUT VOLTAGE (V)
11.0
OUT
V
10.5
10.0
15.4
L = 47 mH
V
= 15 V
OUT
C
= 33 mF
OUT
TA = 25°C
Figure 1
1.8 V
2.4 V
3.6 V
4.0 V
3.0 V
I
, OUTPUT CURRENT (mA) I
OUT
Figure 4. Output Voltage versus Output
L = 47 mH
V
OUT
C
OUT
TA = 25°C
Figure 1
1.8 V
= 12 V
= 33 mF
2.4 V
I
OUT
Current (V
, OUTPUT CURRENT (mA)
OUT
3.0 V
= 15 V)
3.6 V
Figure 6. Output Voltage versus Output
Current (V
OUT
= 12 V)
VIN = 5.5
V
5.0 V
706050403020100
VIN = 5.5
V
5.0 V
4.0 V
706050403020100
100
Vin = 5.5 V
80
2.4 V
60
1.8 V
40
EFFICIENCY (%)
20
3.0 V
3.6 V
4.0 V
L = 47 mH
V
OUT
C
OUT
TA = 25°C
Figure 1
5.0 V
= 15 V
= 33 mF
0
80 80
, OUTPUT CURRENT (mA)
OUT
706050403020100
Figure 5. Efficiency versus Output Current
(V
= 15 V)
OUT
100
VIN = 5.5
V
80
60
1.8 V
2.4 V
3.0 V
3.6 V
4.0 V
5.0 V
L = 47 mH
V
= 12 V
EFFICIENCY (%)
40
C
OUT
OUT
= 33 mF
TA = 25°C
Figure 1
20
80
I
, OUTPUT CURRENT (mA)
OUT
706050403020100
Figure 7. Efficiency versus Output Current
(V
= 12 V)
OUT
12.4
80
15.2
I
= 5 mA
15.0
14.8
, OUTPUT VOLTAGE (V)
14.6
OUT
V
OUT
I
OUT
= 0 mA
L = 47 mH
V
C
TA = 25°C
Figure 1
14.4
Vin, INPUT VOLTAGE (V)
Figure 8. Output Voltage versus Input Voltage
(V
= 15 V)
OUT
OUT
OUT
= 15 V
= 33 mF
5.04.54.0
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12.2
I
= 5 mA
I
OUT
OUT
= 0 mA
L = 47 mH
V
= 12 V
OUT
C
= 33 mF
OUT
TA = 25°C
Figure 1
12.0
11.8
, OUTPUT VOLTAGE (V)
11.6
OUT
V
11.4
6.05.53.53.02.52.0
5.04.54.0
6.05.53.53.02.52.0
Vin, INPUT VOLTAGE (V)
Figure 9. Output Voltage versus Input Voltage
(V
= 12 V)
OUT
5
NCP1403
TYPICAL CHARACTERISTICS
1000
V
900
800
700
600
500
OUT
L = 47 mH
D = MBR0520LT1
C
IN
C
OUT
I
OUT
TA = 25°C
Figure 1
400
300
200
, NO LOAD INPUT CURRENT (mA)
100
IN
I
0
VIN, INPUT VOLTAGE (V) VIN, INPUT VOLTAGE (V)
Figure 10. No Load Input Current versus
Input Voltage
6
5
4
3
2
, SWITCH-ON RESISTANCE (W)
DS(on)
1
R
VIN, INPUT VOLTAGE (V) I
Figure 12. Switch-On Resistance versus Input
Voltage
= 15 V
= 10 mF
= 33 mF
= 0 mA
V
= 15 V
OUT
TA = 25°C
600
500
400
300
200
, CURRENT LIMIT (mA)
LIM
I
100
0
654321
5.0
4.5
4.0
3.5
3.0
2.5
2.0
, STARTUP/HOLD VOLTAGE (V)
1.5
HOLD
1.0
/V
0.5
START
654321
V
Figure 13. Startup/Hold Voltage versus Output
TA = 25°C
Figure 11. Current Limit versus Input Voltage
V
= 15 V
OUT
L = 47 mH
C
= 33 mF
OUT
TA = 25°C
Figure 1
V
START
V
HOLD
16141210 2018 28262422
, OUTPUT CURRENT (mA)
OUT
Current
654321
3086420
0.84
0.82
0.80
0.78
, FEEDBACK VOLTAGE (V)
0.76
FB
V
0.74
TA, AMBIENT TEMPERATURE(°C) TA, AMBIENT TEMPERATURE (°C)
Figure 14. Feedback Voltage versus Ambient
Temperature
100
90
80
70
60
, MAXIMUM DUTY CYCLE (%)
MAX
D
50
1007550250-25-50
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1007550250-25-50
Figure 15. Maximum Duty Cycle versus
Ambient Temperature
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