ON NCP1404SN33T1 350 ma pwm/pfm step-up dc-dc converter with low battery detector Datasheet

NCP1404 Series
Product Preview
350 mA PWM/PFM Step-Up
DC-DC Converter with Low
Battery Detector
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The NCP1404 series are monolithic PWM/PFM step–up 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
space–saving TSOP–6 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 Start–Up Voltage of 0.8 V
PWM Oscillator Frequency of 600 kHz at 20% Accuracy
High Efficiency 85% at IOUT = 200 mA, VIN = 2.5 V, VOUT = 3.3 V
Output Current up to 350 mA at VIN = 2.5 V, VOUT = 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 Open–drain Detector Output
Separated Power Supply Pin
Low Profile and Minimum External Parts
Micro Miniature TSOP–6
1
TSOP–6
SN SUFFIX
CASE 318G
PIN CONNECTIONS AND
MARKING DIAGRAM
LBI
1
OUT
2
VDD
3
XXd
•
•
•
•
•
6
6
LX
5
LBO
4
GND
(Top View)
XX = Specific Device Code
d = Date Code
Typical Applications
•
•
•
•
•
•
•
•
See specific marking information in the ordering information
table on page 3 of this data sheet.
Digital Cameras
Cellular Telephones
Personal Digital Assistants (PDA)
Camcorders
Electronic Games
Pagers
Portable Audio (MP3)
Handheld Instruments
ORDERING INFORMATION
Device
Package
Shipping
NCP1404SN19T1
TSOP–6
3000/Tape & Reel
NCP1404SN27T1
TSOP–6
3000/Tape & Reel
NCP1404SN30T1
TSOP–6
3000/Tape & Reel
NCP1404SN33T1
TSOP–6
3000/Tape & Reel
NCP1404SN50T1
TSOP–6
3000/Tape & Reel
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
 Semiconductor Components Industries, LLC, 2002
June, 2002 – Rev. 0
1
Publication Order Number:
NCP1404/D
NCP1404 Series
L
10 H
SD
MBRM110LT1
VIN
0.8 V to 3.0 V
VOUT
3.3 V
C1
10 F
RLB1
LBI
1
2
VDD
6
NCP1404
OUT
RLB2
C2
10 F
LX
LBO
5
GND
4
3
TO
MCU
Figure 1. Typical Step–Up Converter Application
LX
6
OUT
DRIVER
2
+
+
-
ERROR
AMPLIFIER
PWM/PFM
CONTROLLER
LBI
0.5 V
VOLTAGE
REFERENCE
1
SOFT–START
OSCILLATOR
LBO
5
GND
4
VDD
3
0.4 V
VOLTAGE
REFERENCE
+
VDD
Figure 2. Representative Block Diagram
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2
NCP1404 Series
PIN FUNCTION DESCRIPTIONS
Pin
Symbol
Description
1
LBI
2
OUT
Output voltage monitor pin
3
VDD
Power supply pin
4
GND
Ground pin
5
LBO
Low battery detection output pin
6
LX
Low battery detection input pin
External inductor connection pin to power switch drain
ORDERING INFORMATION
Device
Output Voltage
Frequency
Device Marking
NCP1404SN19T1
1.9 V
600 kHz
DB?
NCP1404SN27T1
2.7 V
600 kHz
DB?
NCP1404SN30T1
3.0 V
600 kHz
DB?
NCP1404SN33T1
3.3 V
600 kHz
DB?
NCP1404SN50T1
5.0 V
600 kHz
DB?
NOTE:
Package
Shipping
TSOP–6
3000 Units
per
er 7 Inch Reel
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)
VDD
–0.3 to 6.0
V
Input/Output Pins
Pin 1, Pin 2, Pin 5, Pin 6 Voltage
VIO
–0.3 to 6.0
V
LX Pin Peak Sink Current
ILX
1000
mA
RθJA
250
C/W
Operating Ambient Temperature Range
TA
–40 to + 85
C
Operating Junction Temperature Range
TJ
–40 to + 125
C
Storage Temperature Range
Tstg
–55 to +150
C
Thermal Resistance Junction to Air
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) 2.0 kV per JEDEC standard: JESD22–A114.
Machine Model (MM) 200 V per JEDEC standard: JESD22–A115.
2. Latch–up Current Maximum Rating: 150 mA per JEDEC standard: JESD78.
3. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J–STD–020A.
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3
NCP1404 Series
ELECTRICAL CHARACTERISTICS (For all values TA = 25C unless otherwise noted.)
Symbol
Min
Typ
Max
fOSC
f
480
600
720
kHz
–
0.11
–
%/C
Maximum PWM Duty Cycle (VOUT = VSET × 0.96)
DMAX
70
78
86
%
PFM Duty Cycle
DPFM
12
17
22
%
Minimum Start–up Voltage (IO = 0 mA, VDD = VOUT = VSET)
Vstart
–
0.8
0.95
V
Vstart
–
–1.6
–
mV/C
tSS
0.3
2.0
–
ms
Internal Switching N–Channel FET Drain Voltage
VLX
–
–
6.0
V
LX On–State Current (VDD = VOUT = VSET × 0.96, VLX = 0.6 V)
Device Suffix:
19T1
27T1
30T1
33T1
50T1
VLX
350
550
550
550
600
400
600
600
600
650
–
–
–
–
–
ILXLIM
700
750
800
mA
ILKG
–
0.5
1.0
mA
LBI Threshold Voltage Falling
VLBI
0.396
0.400
0.404
V
LBI Hysteresis
VHYS
–
30
–
mV
ILBI
–
1.5
8.0
nA
LBO Low Output Voltage
VLBO(low)
–
–
0.05
V
LBO Off–State Leakage Current
ILBOLKG
–
1
100
nA
Supply Voltage
VDD
0.8
5.5
V
Output Voltage
Device Suffix:
VOUT
Characteristic
Unit
OSCILLATOR
Frequency (VOUT = VSET × 0.96) (Note 4)
Frequency Temperature Coefficient (TA = –40 to +85C)
Minimum Start–up Voltage Temperature Coefficient (TA = –40 to +85C)
Soft–Start Time (VOUT = VSET)
LX (PIN 6)
Current Limit
Off–State Leakage Current (VLX = 6.0 V, TA = –40 to +85C)
mA
LBI (PIN 1)
LBI Input Current
LBO (PIN 5)
TOTAL DEVICE
19T1
27T1
30T1
33T1
50T1
1.9
2.7
3.0
3.3
5.0
1.948
2.768
3.075
3.383
5.125
VOUT
–
100
–
ppm/C
Operating Current (VOUT = VSET × 0.96, VDD = VSET × 0.6) (Note 5)
IDD1
–
220
300
A
No Switching Operating Current (VOUT = VSET + 0.5 V)
IDD2
–
40
55
A
IDD(no load)
–
65
80
A
Output Voltage Temperature Coefficient (TA = –40 to +85C)
No Load Operating Current
(VDD = VSET × 0.6, IOUT = 0 mA ) (Note 7)
Maximum Output Current
(VDD = VOUT, VIN = VSET × 0.8, Voltage Regulation < 3%)
Device Suffix:
19T1
27T1
30T1
33T1
50T1
4.
5.
6.
7.
V
1.853
2.632
2.925
3.218
4.875
IOUT
mA
150
300
300
300
350
VSET means setting of output voltage.
Operating current is the current consumption of the device in PWM mode.
No switching operating current is the current consumption of the device when there is no switching.
No load operating current is the current consumption of the device in PFM mode at no load.
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4
200
350
350
350
400
–
–
–
–
–
NCP1404 Series
Other Application Circuit
L
MGSF1P02LT1
VIN
5.0 V
MBR0520LT1
820
+
+
RLB1
LBI
LX
1
RLB2
OUT
2
VDD
6
NCP1404
33 F
VOUT
3.3 V
LBO
5
To MCU
I/O Pin
GND
4
3
GND
Figure 3. Step–down Application
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5
33 F
NCP1404 Series
PACKAGE DIMENSIONS
TSOP–6
CASE 318G–02
ISSUE H
A
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.
L
6
S
1
5
4
2
3
B
D
G
M
J
C
0.05 (0.002)
H
K
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6
DIM
A
B
C
D
G
H
J
K
L
M
S
MILLIMETERS
MIN
MAX
2.90
3.10
1.30
1.70
0.90
1.10
0.25
0.50
0.85
1.05
0.013
0.100
0.10
0.26
0.20
0.60
1.25
1.55
0
10 2.50
3.00
INCHES
MIN
MAX
0.1142 0.1220
0.0512 0.0669
0.0354 0.0433
0.0098 0.0197
0.0335 0.0413
0.0005 0.0040
0.0040 0.0102
0.0079 0.0236
0.0493 0.0610
0
10 0.0985 0.1181
NCP1404 Series
Notes
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7
NCP1404 Series
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
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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
Literature Fulfillment:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada
Email: [email protected]
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Email: [email protected]
ON Semiconductor Website: http://onsemi.com
For additional information, please contact your local
Sales Representative.
N. American Technical Support: 800–282–9855 Toll Free USA/Canada
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8
NCP1404/D
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