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Número de pieza | R5325X | |
Descripción | 150mA 2ch LDO REGULATOR | |
Fabricantes | RICOH | |
Logotipo | ||
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R5325x SERIES
150mA 2ch LDO REGULATOR
NO.EA-127-0606
OUTLINE
The R5325x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply
current (Typ. 3.0µA), low dropout, and fast transient response. Each of these voltage regulator ICs consists of a
voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit, and a chip
enable circuit.
These ICs perform with low dropout voltage due to built-in transistor with low ON resistance, and a chip enable
function prolongs the battery life of each system. The line transient response and load transient response of the
R5325x Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication
equipment.
The supply current at no load of R5325x Series is remarkably reduced compared with R5325x Series. The
mode change signal to reduce the supply current is not necessary.
The output voltage of these ICs is internally fixed with high accuracy (±1.0%) Since the packages for these ICs
are SOT-23-6 and PLP1820-6 package, 2ch LDO regulators are included in each, high density mounting of the
ICs on boards is possible.
FEATURES
• Input Voltage ................................................................. 1.5V to 6.0V
• Output Voltage ..............................................................1.2V to 4.0V
• High Output Voltage Accuracy ......................................±1.0% (VOUT >= 1.5V)
• Low Supply Current ...................................................... Typ. 3.0µA (VR1, VR2)
• Standby Current ............................................................ Typ. 0.1µA (VR1,VR2)
• Low Dropout Voltage..................................................... Typ. 0.2V (IOUT=150mA ,VOUT=3.0V)
• High Ripple Rejection ................................................... Typ. 55dB (f=1kHz)
• Built-in fold-back protection circuit ................................ Typ. 50mA (Current at short mode)
• Low Temperature-Drift Coefficient of Output Voltage.... Typ. ±100ppm/°C
• Excellent Line Regulation ............................................. Typ.0.02%/V
• Built-in chip enable circuit (active “H”)
• Fast Transient Response Time from large load current to small load current (50% less than R5323x)
• Small Packages .......................................................... SOT-23-6, PLP1820-6
• Ceramic Capacitor is recommended. (0.1µF or more)
APPLICATIONS
• Power source for handheld communication equipment.
• Power source for electrical appliances such as cameras, VCRs and camcorders.
• Power source for battery-powered equipment.
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R5325x
ELECTRICAL CHARACTERISTICS
• R5325xxxxA/B
Symbol
Item
Conditions
Min.
Typ.
Topt=25°C
Max. Unit
VOUT
Output voltage
VIN=Set lOUT+1V
VOUT >= 1.5V ×0.99
1mA <= IOUT <= 30mA VOUT < 1.5V −15mV
×1.01
+15mV
V
IOUT Output Current
VIN−VOUT=1.0V
150
mA
∆VOUT/∆IOUT Load regulation
VDIF Dropout Voltage
VIN=Set VOUT+1V
1mA <= IOUT <= 150mA
30 80 mV
Refer to the Electrical Characteristics by Output Voltage
ISS Supply Current
VIN=Set VOUT+1V
3 7 µA
Istandby
Supply Current
(Standby)
VIN=Set VOUT+1V
VCE=GND
0.1 1.0
µA
∆VOUT/∆VIN Line regulation
Set VOUT+0.5V <= VIN <= 6.0V
IOUT=30mA
0.1 0.3 %/V
RR Ripple Rejection
f=1kHz
Ripple 0.5Vp-p
VIN−VOUT=1.0V,IOUT=30mA
(In case that VOUT <= 1.7V,
VIN=Set VOUT+1.2V)
55 dB
VIN Input Voltage
1.5 6.0 V
∆VOUT/
∆Topt
ILIM
Output Voltage
Temperature Coefficient
Short Current Limit
IOUT=30mA
−40°C <= Topt <= 85°C
VOUT=0V
±100
50
ppm
/°C
mA
IPD
CE Pull-down Constant
Current
0.15 0.30 0.55 µA
VCEH
CE Input Voltage “H”
1.0 6.0 V
VCEL CE Input Voltage “L”
0.0 0.4 V
en Output Noise
BW=10Hz to 100kHz
30 µVrms
RLOW
Low Output Nch Tr. ON
Resistance
(of B version)
VCE=0V
50 Ω
5
5 Page 10
9
8
7
6
5
4
3
2
1
0
4.0
4.0V (VR1/VR2)
4.5 5.0 5.5
Input Voltage VIN(V)
6.0
6) Supply Current vs. Temperature
1.2V (VR1/VR2)
VIN=2.2V
10
9
8
7
6
5
4
3
2
1
0
-50 -25 0
25 50 75 100
Temperature Topt(°C)
10
9
8
7
6
5
4
3
2
1
0
-50
4.0V (VR1/VR2)
VIN=5.0V
-25 0 25 50 75 100
Temperature Topt(°C)
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R5325x
10
9
8
7
6
5
4
3
2
1
0
-50
2.8V (VR1/VR2)
VIN=3.8V
-25 0 25 50 75 100
Temperature Topt(°C)
11
11 Page |
Páginas | Total 25 Páginas | |
PDF Descargar | [ Datasheet R5325X.PDF ] |
Número de pieza | Descripción | Fabricantes |
R5325X | 150mA 2ch LDO REGULATOR | RICOH |
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