Semiconductor Components Industries, LLC, 2002
June, 2002 Rev. 0
1
Publication Order Number:
NCP1404/D
NCP1404 Series
Product Preview
350 mA PWM/PFM Step-Up
DC-DC Converter with Low
Battery Detector
The NCP1404 series are monolithic PWM/PFM stepup DC to DC
converters which can automatically change operation mode from
PWM to PFM at light loads to improve efficiency at light loads. With
only four external components, this series allow a simple means to
implement highly efficient converters for powering up portable
equipment up to 350 mA loading.
Additionally, this series is featured with a Low Battery Detector to
monitor battery voltage. The NCP1404 device series are available in
spacesaving TSOP6 package with five standard regulated output
voltages. Additional voltages that range from 1.8 V to 5.0 V in
100 mV steps can be manufactured.
Features
Low StartUp Voltage of 0.8 V
PWM Oscillator Frequency of 600 kHz at 20% Accuracy
High Efficiency 85% at I
OUT
= 200 mA, V
IN
= 2.5 V, V
OUT
= 3.3 V
Output Current up to 350 mA at V
IN
= 2.5 V, V
OUT
= 3.3 V
Duty Ratio: 17% to 85% typ. PWM Control
Duty Ratio:
17% typ. PFM Control
Output Voltage Accuracy
2.5%
Low Battery Detection with Opendrain Detector Output
Separated Power Supply Pin
Low Profile and Minimum External Parts
Micro Miniature TSOP6
Typical Applications
Digital Cameras
Cellular Telephones
Personal Digital Assistants (PDA)
Camcorders
Electronic Games
Pagers
Portable Audio (MP3)
Handheld Instruments
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
TSOP6
SN SUFFIX
CASE 318G
1
PIN CONNECTIONS AND
MARKING DIAGRAM
(Top View)
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6
Device
Package
Shipping
ORDERING INFORMATION
NCP1404SN19T1
TSOP6
3000/Tape & Reel
XX
d
XX = Specific Device Code
d
= Date Code
LX
LBO
GND
LBI
OUT
V
DD
NCP1404SN27T1
TSOP6
3000/Tape & Reel
NCP1404SN30T1
TSOP6
3000/Tape & Reel
NCP1404SN33T1
TSOP6
3000/Tape & Reel
NCP1404SN50T1
TSOP6
3000/Tape & Reel
6
5
4
1
2
3
See specific marking information in the ordering information
table on page 3 of this data sheet.
NCP1404 Series
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2
Figure 1. Typical StepUp Converter Application
V
IN
0.8 V to 3.0 V
C
1
10
m
F
L
10
m
H
C
2
V
OUT
10
m
F
MBRM110LT1
3.3 V
Figure 2. Representative Block Diagram
DRIVER
PWM/PFM
CONTROLLER
OSCILLATOR
0.4 V
VOLTAGE
REFERENCE
SOFTSTART
0.5 V
VOLTAGE
REFERENCE
+
-
ERROR
AMPLIFIER
+
-
-
+
V
DD
V
DD
6
LX
1
LBI
5
LBO
3
OUT
2
GND
4
V
DD
3
OUT
2
LBI
1
GND
4
LBO
5
LX
6
TO
MCU
NCP1404
R
LB2
R
LB1
SD
NCP1404 Series
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3
PIN FUNCTION DESCRIPTIONS
Pin
Symbol
Description
1
LBI
Low battery detection input pin
2
OUT
Output voltage monitor pin
3
V
DD
Power supply pin
4
GND
Ground pin
5
LBO
Low battery detection output pin
6
LX
External inductor connection pin to power switch drain
ORDERING INFORMATION
Device
Output Voltage
Frequency
Device Marking
Package
Shipping
NCP1404SN19T1
1.9 V
600 kHz
DB?
NCP1404SN27T1
2.7 V
600 kHz
DB?
NCP1404SN30T1
3.0 V
600 kHz
DB?
TSOP6
3000 Units
per 7 Inch Reel
NCP1404SN33T1
3.3 V
600 kHz
DB?
er 7 Inch Reel
NCP1404SN50T1
5.0 V
600 kHz
DB?
NOTE:
The ordering information lists five standard output voltage device options. Additional device with output voltage ranging from 1.8 V to
5.0 V in 100 mV increments can be manufactured. Contact your ON Semiconductor representative for availability.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage (Pin 3)
V
DD
0.3 to 6.0
V
Input/Output Pins
Pin 1, Pin 2, Pin 5, Pin 6 Voltage
V
IO
0.3 to 6.0
V
LX Pin Peak Sink Current
I
LX
1000
mA
Thermal Resistance Junction to Air
R
JA
250
_
C/W
Operating Ambient Temperature Range
T
A
40 to + 85
_
C
Operating Junction Temperature Range
T
J
40 to + 125
_
C
Storage Temperature Range
T
stg
55 to +150
_
C
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM)
"
2.0 kV per JEDEC standard: JESD22A114.
Machine Model (MM)
"
200 V per JEDEC standard: JESD22A115.
2. Latchup Current Maximum Rating:
"
150 mA per JEDEC standard: JESD78.
3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: JSTD020A.
NCP1404 Series
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4
ELECTRICAL CHARACTERISTICS
(For all values T
A
= 25
_
C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (V
OUT
= V
SET
0.96) (Note 4)
f
OSC
480
600
720
kHz
Frequency Temperature Coefficient (T
A
= 40 to +85
_
C)
D
f
0.11
%/
_
C
Maximum PWM Duty Cycle (V
OUT
= V
SET
0.96)
D
MAX
70
78
86
%
PFM Duty Cycle
D
PFM
12
17
22
%
Minimum Startup Voltage (I
O
= 0 mA, V
DD
= V
OUT
= V
SET
)
V
start
0.8
0.95
V
Minimum Startup Voltage Temperature Coefficient (T
A
= 40 to +85
_
C)
D
V
start
1.6
mV/
_
C
SoftStart Time (V
OUT
= V
SET
)
t
SS
0.3
2.0
ms
LX (PIN 6)
Internal Switching NChannel FET Drain Voltage
V
LX
6.0
V
LX OnState Current (V
DD
= V
OUT
= V
SET
0.96, V
LX
= 0.6
V)
Device Suffix:
19T1
27T1
30T1
33T1
50T1
V
LX
350
550
550
550
600
400
600
600
600
650
mA
Current Limit
I
LXLIM
700
750
800
mA
OffState Leakage Current (V
LX
= 6.0 V, T
A
= 40 to +85
_
C)
I
LKG
0.5
1.0
mA
LBI (PIN 1)
LBI Threshold Voltage Falling
V
LBI
0.396
0.400
0.404
V
LBI Hysteresis
V
HYS
30
mV
LBI Input Current
I
LBI
1.5
8.0
nA
LBO (PIN 5)
LBO Low Output Voltage
V
LBO(low)
0.05
V
LBO OffState Leakage Current
I
LBOLKG
1
100
nA
TOTAL DEVICE
Supply Voltage
V
DD
0.8
5.5
V
Output Voltage
Device Suffix:
19T1
27T1
30T1
33T1
50T1
V
OUT
1.853
2.632
2.925
3.218
4.875
1.9
2.7
3.0
3.3
5.0
1.948
2.768
3.075
3.383
5.125
V
Output Voltage Temperature Coefficient (T
A
= 40 to +85
_
C)
D
V
OUT
100
ppm/
_
C
Operating Current (V
OUT
= V
SET
0.96, V
DD
= V
SET
0.6) (Note 5)
I
DD1
220
300
m
A
No Switching Operating Current (V
OUT
= V
SET
+
0.5 V)
I
DD2
40
55
m
A
No Load Operating Current
(V
DD
= V
SET
0.6, I
OUT
= 0 mA ) (Note 7)
I
DD(no load)
65
80
m
A
Maximum Output Current
(V
DD
= V
OUT
, V
IN
= V
SET
0.8, Voltage Regulation < 3%)
Device Suffix:
19T1
27T1
30T1
33T1
50T1
I
OUT
150
300
300
300
350
200
350
350
350
400
mA
4. V
SET
means setting of output voltage.
5. Operating current is the current consumption of the device in PWM mode.
6. No switching operating current is the current consumption of the device when there is no switching.
7. No load operating current is the current consumption of the device in PFM mode at no load.
NCP1404 Series
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5
Other Application Circuit
Figure 3. Stepdown Application
V
IN
5.0 V
33
m
F
L
V
OUT
33
m
F
MBR0520LT1
3.3 V
V
DD
3
OUT
2
LBI
1
GND
4
LBO
5
LX
6
To MCU
I/O Pin
NCP1404
R
LB2
R
LB1
GND
+
+
820
MGSF1P02LT1
NCP1404 Series
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6
PACKAGE DIMENSIONS
TSOP6
CASE 318G02
ISSUE H
2
3
4
5
6
A
L
1
S
G
D
B
H
C
0.05 (0.002)
DIM
MIN
MAX
MIN
MAX
INCHES
MILLIMETERS
A
0.1142 0.1220
2.90
3.10
B
0.0512 0.0669
1.30
1.70
C
0.0354 0.0433
0.90
1.10
D
0.0098 0.0197
0.25
0.50
G
0.0335 0.0413
0.85
1.05
H
0.0005 0.0040
0.013
0.100
J
0.0040 0.0102
0.10
0.26
K
0.0079 0.0236
0.20
0.60
L
0.0493 0.0610
1.25
1.55
M
0
10
0
10
S
0.0985 0.1181
2.50
3.00
_
_
_
_
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
M
J
K
NCP1404 Series
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7
Notes
NCP1404 Series
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8
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 indem nify 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.
PUBLICATION ORDERING INFORMATION
JAPAN: ON Semiconductor, Japan Customer Focus Center
4321 NishiGotanda, Shinagawaku, Tokyo, Japan 1410031
Phone: 81357402700
Email: r14525@onsemi.com
ON Semiconductor Website: http://onsemi.com
For additional information, please contact your local
Sales Representative.
NCP1404/D
Literature Fulfillment:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 3036752175 or 8003443860 Toll Free USA/Canada
Fax: 3036752176 or 8003443867 Toll Free USA/Canada
Email: ONlit@hibbertco.com
N. American Technical Support: 8002829855 Toll Free USA/Canada
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