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NCP1530DM30R2 데이터시트 PDF




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부품번호 NCP1530DM30R2 기능
기능 600 mA PWM/PFM Step-Down Converter with External Synchronization Pin
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NCP1530DM30R2 데이터시트, 핀배열, 회로
NCP1530
600 mA PWM/PFM
Step−Down Converter with
External Synchronization Pin
The NCP1530 is a PWM/PFM non−synchronous step−down
(Buck) DC−DC converter for usage in systems supplied from 1−cell
Li−ion, or 2 or more cells Alkaline/NiCd/NiMH batteries. It can
operate in Constant−Frequency PWM mode or PWM/PFM mode in
which the controller will automatically switch to PFM mode
operation at low output loads to maintain high efficiency. The
switching frequency can also be synchronized to external clock
between 600 kHz and 1.2 MHz. The maximum output current is up
to 600 mA. Applying an external synchronizing signal to SYN pin
can supersede the PFM operation.
The NCP1530 consumes only 47 mA (typ) of supply current
(VOUT = 3.0 V, no switching) and can be forced to shutdown mode by
bringing the enable input (EN) low. In shutdown mode, the regulator
is disabled and the shutdown supply current is reduced to
0.5 mA (typ). Other features include built−in undervoltage lockout,
internal thermal shutdown, an externally programmable soft−start
time and output current limit protection. The NCP1530 operates
from a maximum input voltage of 5.0 V and is available in a space
saving, low profile Micro8package.
Features
Pb−Free Package is Available
High Conversion Efficiency, up to 92% at VIN = 4.3 V,
VOUT = 3.3 V, IOUT = 300 mA
Current−Mode PWM Control
Automatic PWM/PFM Mode for Current Saving at Low Output Loads
Internal Switching Transistor Support 600 mA Output Current
(VIN = 5.0 V, VOUT = 3.3 V)
High Switching Frequency (600 kHz), Support Small Size Inductor
and Capacitor, Ceramic Capacitors Can be Used
Synchronize to External Clock Signal up to 1.2 MHz
100% Duty Cycle for Maximum Utilization of the Supply Source
Programmable Soft−Start Time through External Chip Capacitor
Externally Accessible Voltage Reference
Built−In Input Undervoltage Lockout
Built−In Output Overvoltage Protection
Power Saving Shutdown Mode
Space Saving, Low Profile Micro8 Package
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8
1
MARKING
DIAGRAM
Micro8]
DM SUFFIX
CASE 846A
xxxx
ALYW
xxxx = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
PIN CONNECTIONS
VIN
SYN
SS
GND
1
2
3
4
(Top View)
8 LX
7 VREF
6 VOUT
5 EN
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
Typical Applications
PDAs
Digital Still Camera
Cellular Phone and Radios
Portable Test Equipment
Portable Scanners
Portable Audio Systems
© Semiconductor Components Industries, LLC, 2004
November, 2004 − Rev. 3
1
Publication Order Number:
NCP1530/D




NCP1530DM30R2 pdf, 반도체, 판매, 대치품
NCP1530
ELECTRICAL CHARACTERISTICS (VIN = VR + 1.0 V, test circuit, refer to Figure 1, CSS = NC and CVREF = 1.0 mF, TA = 25°C for
typical value, 0°C TA 85°C for min/max values unless otherwise noted.) *VR is the factory−programmed output voltage setting.
Characteristic
Symbol Min Typ Max Unit
Input Voltage
Output Voltage (Iload = 150 mA, VR + 1.0 V < VIN < 5.0 V) (Note 4)
NCP1530DM25R2
NCP1530DM27R2
NCP1530DM30R2
NCP1530DM33R2
VIN
VOUT
1.1 VR
2.425
2.619
2.910
3.201
2.5
2.7
3.0
3.3
5.0
2.575
2.781
3.090
3.399
V
V
Maximum Output Current (VIN = 5.0 V, VOUT = 3.0 V) (Note 5)
Supply Current (VIN = VR + 1.0 V, No Load, EN and SYN Pins NC)
Shutdown Supply Current (VIN = 5.0 V, No Load, VEN = 0 V)
LX Pin Leakage Current (No Load, VEN = 0 V)
Internal P−FET ON Resistance at LX Pin
(VIN = VR + 1.0 V, ILoad = 150 mA)
Oscillator Frequency
(VIN = VEN = VR + 1.0 V, ILoad = 100 mA, SYN Pin NC)
Maximum PWM Duty Cycle (Note 5)
PFM to PWM Switch−Over Current Threshold
(VIN = 4.5 V, SYN Pin NC, L = 5.6 mH, COUT = 22 mF) (Note 5)
NCP1530DM25R2
NCP1530DM27R2
NCP1530DM30R2
NCP1530DM33R2
IOUT(max)
600
− mA
IIN − 45 95 mA
ISHDN
− 0.5 1.0 mA
ILX − − 1.0 mA
RDS(ON) − 0.3 0.5 W
fOSC
480 600 720 kHz
DMAX−PWM
IPFM−PWM
− 100 %
mA
83 −
90 −
100 −
102 −
PWM to PFM Switch−Over Current Threshold
(VIN = 4.5 V, SYN Pin NC, L = 5.6 mH, COUT = 22 mF) (Note 5)
NCP1530DM25R2
NCP1530DM27R2
NCP1530DM30R2
NCP1530DM33R2
IPWM−PFM
mA
− 27 −
− 38 −
− 39 −
− 48 −
Input Undervoltage Lockout Threshold
VUVLO
2.0 2.45
V
Reference Voltage (VIN = VR + 1.0 V, CVREF = 1.0 mF)
VREF
1.184 1.20 1.216
V
Reference Voltage Temperature Coefficient
(VIN = VR + 1.0 V, CVREF = 1.0 mF) (Note 5)
TCVREF
− 0.03 − mV/°C
Reference Voltage Load Current
(VIN = VR + 1.0 V, CVREF = 1.0 mF) (Note 6)
IVREF
5.0 −
− mA
Enable Logic High Threshold Voltage (VIN = VR + 1.0 V, ILoad = 0 mA)
VEN−H
1.5 1.85
V
Enable Logic Low Threshold Voltage (VIN = VR + 1.0 V, ILoad = 0 mA)
VEN−L
0.5 1.2
V
PWM Minimum On−Time (Note 5)
tPWM−ON − 100 −
ns
PWM OV Protection Level
%VOV
− 6.0 12 %
PWM Cycle−by−Cycle Current Limit (Note 5)
ILIM
− 1.5 −
A
Built−in Soft−Start Time (VOUT = 3.0 V, SS Pin NC) (Note 5)
tSS
− 500 −
ms
Thermal Shutdown Threshold (VIN = 3.5 V, ILoad = 0 mA) (Note 5)
THSHD
− 145 −
°C
Thermal Shutdown Hysteresis (VIN = 3.5 V, ILoad = 0 mA) (Note 5)
THHSYS − 15 − °C
4. Tested at VIN = VR + 1.0 V in production only. Full VIN range guaranteed by design.
5. Parameter guaranteed by design only, not tested in production.
6. Loading capability decreases with VOUT decreases.
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NCP1530DM30R2 전자부품, 판매, 대치품
NCP1530
100
PWM/PFM
90
80
SYN 600 kHz
70
SYN 1.2 MHz
60 PWM
L = 5.6 mH, COUT = 22 mF
50
1 10 100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 15. Efficiency vs. Output Load Current
(VIN = 3.5 V, VOUT = 2.5 V)
100
90 PWM/PFM
80
SYN 600 kHz
70
SYN 1.2 MHz
PWM
60
L = 5.6 mH, COUT = 22 mF
50
1 10 100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 16. Efficiency vs. Output Load Current
(VIN = 5.0 V, VOUT = 2.5 V)
100
PWM/PFM
90
100
90 PWM/PFM
80
SYN 600 kHz
70
SYN 1.2 MHz
80
PWM
70
SYN 1.2 MHz
60 PWM
L = 5.6 mH, COUT = 22 mF
50
1 10 100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 17. Efficiency vs. Output Load Current
(VIN = 3.7 V, VOUT = 2.7 V)
60
SYN 600 kHz
50
1 10
L = 5.6 mH, COUT = 22 mF
100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 18. Efficiency vs. Output Load Current
(VIN = 5.0 V, VOUT = 2.7 V)
100
PWM/PFM
90
100
90 PWM/PFM
80
SYN 600 kHz
70
SYN 1.2 MHz
80
SYN 600 kHz
70
SYN 1.2 MHz
60
PWM
L = 5.6 mH, COUT = 22 mF
50
1 10 100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 19. Efficiency vs. Output Load Current
(VIN = 4.0 V, VOUT = 3.0 V)
60 PWM
L = 5.6 mH, COUT = 22 mF
50
1 10 100 1000
ILOAD, OUTPUT LOAD CURRENT (mA)
Figure 20. Efficiency vs. Output Load Current
(VIN = 5.0 V, VOUT = 3.0 V)
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