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PDF R1173x Data sheet ( Hoja de datos )
| Número de pieza | R1173x | |
| Descripción | Super low on resistance/Low voltage LDO | |
| Fabricantes | RICOH | |
| Logotipo |  |
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R1173x SERIES
Super low on resistance/Low voltage LDO
NO.EA-123-070828
OUTLINE
The R1173x Series are CMOS-based positive voltage regulator ICs. The R1173x Series have features of
super low dropout, 1A output current capability, and -3mV typical load regulation at 1A. Even the output voltage
is set at 1.5V, on resistance of internal FET is typically 0.32Ω. Therefore, applications that require a large current
at small dropout are suitable for the R1173x series. Low input voltage is acceptable and low output voltage can
be set. The minimum input voltage is 1.4V, and the lowest set output voltage is 0.8V. Each of these ICs consists
of a voltage reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at
over-current, a chip enable circuit, a thermal-shutdown circuit, and so on. A stand-by mode with ultra low
consumption current can be realized with the chip enable pin. The output voltage types of R1173 are fixed one in
the IC and adjustable one (R1173x001x).
Since the packages for these ICs are the SOT-89-5 package, HSON-6, or HSOP-6J, high density mounting of
the ICs on boards is possible.
FEATURES
• Output Current ............................................................. 1A
• Supply Current ............................................................. Typ. 60µA
• Standby Current ........................................................... Typ. 0.1µA
• Input Voltage Range .................................................... 1.4V to 6.0V
• Output Voltage Range (R1173xxx1) ............................ 0.8V to 5.0V (HSOP-6J: 0.8V to 3.5V)
• Output Voltage Range (R1173x001) ............................ 1.0V to VIN
• Dropout Voltage ........................................................... Typ. 0.32V (VOUT=1.5V, IOUT=1A)
Typ. 0.18V (VOUT=2.8V, IOUT=1A)
• Ripple Rejection........................................................... Typ. 70dB (VOUT=2.8V)
• Output Voltage Accuracy.............................................. ±2.0%
• Temperature-drift Coefficient of Output Voltage........... Typ. ±100ppm/°C
• Line Regulation ............................................................ Typ. 0.05%/V
• Load Regulation........................................................... Typ. −2mV (IOUT=300mA)
Typ. −3mV (IOUT=1A)
• Packages ..................................................................... SOT-89-5, HSON-6, HSOP-6J
• Low inrush current at turning-on .................................. Typ. 500mA
• Built-in Current Limit Circuit ......................................... Typ. 250mA
• Output capacitors ......................................................... CIN=Ceramic 4.7µF
COUT=Tantalum 4.7µF (VOUT<1.0V)
COUT=Ceramic 4.7µF (VOUT >= 1.0V)
• Built-in Thermal Shutdown Circuit
APPLICATIONS
• Local Power source for Notebook PC.
• Local Power source for portable communication equipments, cameras, and videos.
• Local Power source for home appliances.
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R1173x
ELECTRICAL CHARACTERISTICS
• R1173xxxxB/D (Fixed Output Voltage Type)
Topt=25°C
Symbol
Item
Conditions
Min. Typ. Max. Unit
VIN Input Voltage
1.4 6.0 V
ISS Supply Current
Istandby Standby Current
VOUT Output voltage
IOUT Output Current
∆VOUT/
∆IOUT
Load regulation
VDIF
∆VOUT/
∆VIN
Dropout Voltage
Line regulation
RR Ripple Rejection
∆VOUT/
∆Topt
Ilim
RPD
VCEH
Output Voltage
Temperature Coefficient
Short Current Limit
Pull-down resistance
for CE pin
CE Input Voltage "H"
VIN−VOUT=1.0V, VCE=VIN, IOUT=0A
VIN= 6.0V, VCE=0V
VIN−VOUT=1.0V
IOUT=100mA
VOUT>1.5V
VOUT <= 1.5V
×0.98
−30
VIN−VOUT=1.0V
1
VIN−VOUT=0.3V, 1mA <= IOUT <= 300mA
If VOUT <= 1.1V, then VIN=1.4V
−15
VIN−VOUT=0.3V, 1mA <= IOUT <= 1A
If VOUT <= 1.1V, then VIN=1.7V
Refer to the following table
IOUT=100mA, VOUT+0.5V <= VIN <= 6.0V
If VOUT <= 0.9V, 1.4V <= VIN <= 6.0V
f=1kHz (VOUT <= 4.0V)
f=1kHz (VOUT>4.0V)
Ripple 0.5Vp-p,VIN−VOUT=1.0V, IOUT=100mA
If VOUT <= 1.2V, VIN−VOUT=1.5V, IOUT=100mA
IOUT=100mA,
−40°C <= Topt <= 85°C
VOUT=0V
60 100 µA
0.1 1.0 µA
×1.02 V
+30 mV
A
−2 15
mV
−3
0.05 0.20 %/V
70
60 dB
±100
250
ppm/
°C
mA
1.9 5.0 15.0 MΩ
1.0 6.0 V
VCEL CE Input Voltage "L"
TTSD
Thermal Shutdown Detector
Threshold Temperature
Junction
Temperature
TTSR
Thermal Shutdown
Released Temperature
Junction Temperature
en Output Noise
BW=10Hz to 100kHz
0 0.4 V
150 °C
120 °C
30 µVrms
• Dropout Voltage by Output Voltage
Output Voltage
VOUT (V)
0.8 <= VOUT < 0.9
0.9 <= VOUT < 1.0
1.0 <= VOUT < 1.5
1.5 <= VOUT < 2.6
2.6 <= VOUT
Typ.
0.33
0.22
0.18
0.10
0.05
Dropout Voltage VDIF (V)
IOUT=300mA
Max.
0.57
0.47
0.32
0.15
0.10
Topt=25°C
IOUT=1A
Typ.
0.72
0.64
0.56
0.32
0.18
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R1173x
3) Dropout Voltage vs. Output Current (Topt=25°C)
R1173x081x
70
60
50
40
30
20
10
0
0123456
Input Voltage VIN(V)
R1173x301x
70
60
50
40
30
20
10
0
0123456
Input Voltage VIN(V)
R1173x501x
70
60
50
40
30
20
10
0
0123456
Input Voltage VIN(V)
R1173x151x
70
60
50
40
30
20
10
0
0123456
Input Voltage VIN(V)
R1173x401x
70
60
50
40
30
20
10
0
0123456
Input Voltage VIN(V)
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet R1173x.PDF ] | |
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