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PDF XCM524 Data sheet ( Hoja de datos )
| Número de pieza | XCM524 | |
| Descripción | 600mA Synchronous Step-Down DC/DC Converter 500mA LDO | |
| Fabricantes | Torex Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de XCM524 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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XCM524 Series
www.DataSheet4U.com
ETR2428-003
600mA Synchronous Step-Down DC/DC Converter + 500mA LDO
with Delay Function Voltage Detector
GENERAL DESCRIPTION
The XCM524 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous
step–down DC/DC converter and a high speed, high current LDO regulator with voltage detector function. The device is
housed in small USP-12B01 package which is ideally suited for space conscious applications. The DC/DC converter and the
LDO blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal.
The DC/DC converter block with a built-in 0.42 P-channel MOS driver transistor and 0.52 N-channel MOS switching
transistor, designed to allow the use of ceramic capacitors. The DC/DC enables a high efficiency, stable power supply with an
output current of 600mA to be configured using only a coil and two capacitors connected externally.
The LDO regulator block is precise, low noise, high ripple rejection, low dropout positive voltage regulators with built-in voltage
detector. The LDO is also compatible with low ESR ceramic output capacitors. Good output stability is maintained during
load fluctuations due to its excellent transient response. The current limiter's fold back circuit also operates as a short circuit
protection for the output current.
The voltage detector block of the contains delay circuit. The delay time can be controlled by an external capacitor.
The detector monitors the input voltage of the voltage regulator.
APPLICATIONS
●BD, DVD drives
●HDD drives
●Cameras, Video recorders
●Mobile phones, Smart phones
●Various general-purpose power supplies
TYPICAL APPLICATION CIRCUIT
FEATURES
<DC/DC Convertor Block>
Input Voltage Range
: 2.7V ~ 6.0V
Output Voltage Options
: 0.8V ~ 4.0V (±2 )
High Efficiency
: 92% (TYP.)
Output Current
: 600mA (MAX.)
Oscillation Frequency
: 1.2MHz, 3.0MHz (+15%)
Current Limiter Circuit Built-In : Constant Current & Latching
Control Methods
: PWM
PWM/PFM Auto
*Performance depends on external components and wiring on PCB wiring.
<Regulator Block>
Maximum Output Current
: 500mA (Limiter 600mA TYP.)
Dropout Voltage
(2.5V VROUT 4.9V)
: 200mV@IROUT=100mA (TYP.)
Operating Voltage Range
: 2.0V ~ 6.0V
Output Voltage Options
: 0.9V ~ 5.1V (0.1V increments, ±2
Detect Voltage Options
: 2.0V ~ 5.5V (0.1V increments, ±2
VR.VD Temperature Stability :±100ppm/ (TYP.)
High Ripple Rejection
: 65dB (@10kHz)
Low ESR Capacitor
: Ceramic Capacitor
Operating Temperature Range
: -40 ~ +85
Package
: USP-12B01
Environmentally Friendly
: EU RoHS Compliant, Pb Free
)
)
(TOP VIEW)
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1 page  
XCM524
www.DataSheet4US.coemries
ELECTRICAL CHARACTERISTICS
●XCM524xx 1ch (VDR Block)
Ta=25
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP. MAX. UNITS CIRCUIT
Output Voltage (*2, 3)
VROUT(E)
IROUT=30mA
×0.98 VROUT(T)
Maximum Output Current
(0.9 ~ 2.4V)
IROUTMAX
VIN1=VROUT(T)+2.0V
400 -
Maximum Output Current
(2.5 ~ 4.9V)
IROUTMAX
VIN1=VROUT(T)+2.0V
Higher than VROUT(T)= 4.0V, VIN1=6.0V
Load Regulation
VROUT
1mA IROUT 100mA
Dropout Voltage (*4)
Vdif1
Vdif2
IROUT=30mA
IROUT=100mA
Supply Current
(FV / FX / FY / FZ series)
IDD
VIN1=VROUT(T)+1.0V
VROUT(T) 0.9V, VIN1=2.0V
VROUT(T)+1.0V VIN1 6.0V
Line Regulation
VROUT/
(VIN1 VROUT)
VROUT(T) 0.9V, 2.0V VIN1 6.0V
IROUT=30mA
VROUT(T) 1.75V, IROUT=10mA
Input Voltage
VIN1
Output Voltage
VROUT/
IROUT=30mA
Temperature Characteristics ( Topr VROUT)
-40 Topr 85
500
-
-
-
2.0
-
-
15
E-1
E-2
90
0.01
-
100
×1.02
-
-
50
145
0.20
6.0
-
V
mA
mA
mV
mV
mV
μA
%/V
V
ppm /
-
Ripple Rejection Rate
PSRR
VIN1=[VROUT(T)+1.0]V+0.5Vp-pAC
When VROUT(T) 1.25V,
VIN1=2.25V+0.5Vp-pAC
When VROUT(T) 4.75V,
VIN1=5.75V+0.5Vp-pAC
IROUT=50mA, f=10kHz
-
65
- dB
Current Limiter
(2.4V or less)
Current Limiter
(2.5V or more)
Short-Circuit Current
Detect Voltage (*7, 8)
Hysteresis Range (*8)
Supply Current (*9)
Detect Voltage
Temperature Stability
Delay Resistance
IRLIMl
IRLIM
IRSHORT
VDF(E)
VHYS
IDOUT
VDF/
(Topr VDF)
Rdelay
VIN1=VROUT(T)+2.0V
-
VIN1=VROUT(T)+2.0V
Higher than VROUT(T)= 4.0V, VIN1=6.0V
VIN1=VROUT(T)+2.0V
Higher than VROUT(T)= 4.0V, VIN1=6.0V
500
-
×0.98
VDF(T)
×0.02
VIN1 = 2.0V
3.0
VIN1 = 3.0V
4.0
VDOUT = 0.5V
VIN1 = 4.0V
5.0
VIN1 = 5.0V
7.0
VIN1 = 6.0V
10.0
-40 Topr 85
-
VIN1=6.0V, Cd=0V
Delay Resistance =6.0V/Delay Current
300
600
600
50
VDF(T)
VDF(T)
×0.05
6.0
8.0
10.0
12.0
15.0
±100
500
- mA
- mA
-
×1.02
VDF(T)
×0.08
-
-
-
-
-
mA
V
V
mA
- ppm /
700 kΩ
NOTE:
*1 : Unless otherwise stated, (VIN1=VROUT(T)+1.0V)
*2 : VROUT(T) Specified VR output voltage
*3 : VROUT(E) Effective VR output voltage. Refer to the E-0 chart for values less than VDF(T) 1.5V.
(i.e. the VR output voltage when "VROUT(T)+1.0V" is provided at the VIN pin while maintaining a certain IROUT value).
*4 : Vdif={VIN1(*6)-VROUT1(*5)}
*5 : A voltage equal to 98% of the VR output voltage whenever a stabilized VROUT1=IROUT{VROUT(T)+1.0V} is input.
*6 : VIN1 The input voltage when VOUT1, which appears as input voltage is gradually decreased.
*7 : VDF(T) Specified detect voltage value
*8 : VDF(E) Effective detect voltage value.
*9 : VD output current is sink current at detect.
* The electrical characteristics above are when the other channel is in stop.
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5 Page 
XCM524
www.DataSheet4US.coemries
ELECTRICAL CHARACTERISTICS (Continued)
PFM Switching Current (IPFM) by Oscillation Frequency and Output Voltage
1.2MHz
(mA)
SETTING VOLTAGE
MIN.
TYP.
MAX.
VDCOUT(T)≦1.2Ｖ
140 180 240
1.2V＜VDCOUT(T)≦1.75Ｖ
130
170
220
1.8V≦VDCOUT(T)
120 160 200
3.0MHz
SETTING VOLTAGE
VDCOUT(T)≦1.2Ｖ
1.2V＜VDCOUT(T)≦1.75Ｖ
1.8V≦VDCOUT(T)
MIN.
190
180
170
TYP.
260
240
220
(mA)
MAX.
350
300
270
Measuring Maximum IPFM Limit, VIN2 Voltage
fOSC 1.2MHz
3.0MHz
(C-1)
VDCOUT(T)+0.5V VDCOUT(T)+1.0V
Minimum operating voltage is 2.7V
Although when VDCOUT(T)=1.2V, fOSC=1.2MHz, (C-1)=1.7V the (C-1) becomes 2.7V because of the minimum operating voltage 2.7V.
Soft-Start Time Chart (XCM524xC/ XCM524xD Series Only)
PRODUCT SERIES
fOSC OUTPUT VOLTAGE
1.2MHz
0.8V VDCOUT(T)<1.5V
XCM524AC
1.2MHz
1.2MHz
1.5V VDCOUT(T)<1.8V
1.8V VDCOUT(T)<2.5V
1.2MHz
2.5V VDCOUT(T) 4.0V
XCM524BC
1.2MHz
1.2MHz
0.8V VDCOUT(T)<2.5V
2.5V VDCOUT(T) 4.0V
XCM524xD
3.0MHz
3.0MHz
0.8V VDCOUT(T)<1.8V
1.8V VDCOUT(T) 4.0V
MIN.
-
-
-
-
-
-
-
-
TYP.
250 s
320 s
250 s
320 s
250 s
320 s
250 s
320 s
MAX.
400 s
500 s
400 s
500 s
400 s
500 s
400 s
500 s
TYPICAL APPLICATION CIRCUIT
Rpull-up
VDOUT
Cd
VIN CIN2
1 VDOUT
2 VSS
3 Cd
4 VIN2
5 PGND
VROUT 12
NC 11
VROUT
CL1
VIN1 10
CIN1
EN2 9
EN2
AGND 8
6 Lx
DCOUT 7
VDCOUT
L CL2
DC/DC BLOCK fOSC=3.0MHz
CIN1 : 1 F (Ceramic)
CL1 : 1 F (Ceramic)
L : 1.5 H (NR3015 TAIIYO YUDEN)
CIN2 : 4.7 F (Ceramic)
CL2 : 10 F (Ceramic)
DC/DC BLOCK fOSC =1.2MHz
CIN1 : 1 F (Ceramic)
CL1 : 1 F (Ceramic)
L : 4.7 H (NR4018 TAIIYO YUDEN)
CIN2 : 4.7 F (Ceramic)
CL2 : 10 F (Ceramic)
11/52
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet XCM524.PDF ] | |
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