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R1161x SERIES
3-MODE 300mA LDO REGULATOR
NO.EA-106-0511
OUTLINE
The R1161x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply current, and low ON-resistance. 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 and a chip enable function. To prevent the destruction by over current, current limit circuit is included. The R1161x Series have 3-mode. One is standby mode with CE or standby control pin. Standby mode realizes ultra small consumption current off mode. Other two modes are realized with ECO pin. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with ECO pin. Consumption current is reduced at Low Power Mode compared with Fast Transient Mode. Output voltage is maintained between FT mode and LP mode. The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.
FEATURES
x Ultra-Low Supply Current .................................Typ. 3.5PA (Low Power Mode, VOUT<1.6V), Typ. 80PA (Fast Transient Mode, VOUT<1.8V) Typ. 60PA (Fast Transient Mode, VOUT ! 1.8V) x Standby Mode ...................................................Typ. 0.1PA x Low Dropout Voltage.........................................Typ. 0.48V(IOUT 300mA Output Voltage 1.0V Type) Typ. 0.31V(IOUT 300mA Output Voltage 1.5V Type) Typ. 0.23V(IOUT 300mA Output Voltage 3.0V Type) x High Ripple Rejection .......................................Typ. 65dB(f 1kHz, FT Mode) x Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/qC x Excellent Line Regulation .................................Typ. 0.01%/V (at Fast Transient Mode) x High Output Voltage Accuracy .......................... r2.0%(r3.0% at LP Mode) x Small Package ................................................SOT-23-5 (Super Mini-mold), SON-6, HSON-6 x Output Voltage ..................................................Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible x Input Voltage .....................................................Min. 1.40V(VOUT ! 1.0V) Min. 1.45V(VOUT<1.0V) x Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode) x External Capacitors...........................................CIN COUT Tantalum 1.0PF (VOUT<1.0V) CIN COUT Ceramic 1.0PF (VOUT ! 1.0V)
APPLICATIONS
x Precision Voltage References. x Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment. x Power source for battery-powered equipment.
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R1161x
BLOCK DIAGRAM
R1161xxxxA
ECO
R1161xxxxB
ECO
VDD
VOUT
VDD
VOUT
Vref Current Limit
Vref Current Limit
CE
GND
CE
GND
R1161xxxxD
ECO
VDD
VOUT
Vref Current Limit
CE
GND
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R1161x
SELECTION GUIDE
The output voltage, the chip enable polarity, package type, and the taping type for the ICs can be selected at the user's request. The selection can be available by designating the part number as shown below;
R1161xxxxx-xx
n n nn n a b a'c d Code a, a'
mPart Number
Contents Designation of Package Type : R1161Nxx1x-xx:SOT-23-5 (Mini-mold) R1161Dxx1x-xx:SON-6, R1161Dxx2x-xx:HSON-6 Setting Output Voltage (VOUT) : Stepwise setting with a step of 0.1V in the range of 0.8V to 3.3V is possible. Designation of Chip Enable Option : A:"L" active type. B:"H" active type. D:"H" active and with auto discharge function Designation of Taping Type : TR Refer to Taping Specifications
b
c
d
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R1161x
PIN CONFIGURATIONS
SOT-23-5 Top View
5 4
SON-6 Bottom View
4 5 6
HSON-6 Top View
6 5 4
Bottom View
4 5 6
6
5
4
(mark side)
1
1 2 3
2
3
3
2
1
1
2
3
3
2
1
PIN DESCRIPTIONS
x SOT-23-5
Pin No 1 2 3 4 5
SON-6, HSON-6
Symbol VDD GND
CE or CE
Pin Description Input Pin Ground Pin Chip Enable Pin MODE alternative pin Output pin
Pin No 1 2 3 4 5 6
Symbol VDD NC VOUT ECO GND
CE or CE
Pin Description Input Pin No Connection Output pin MODE alternative pin Ground Pin Chip Enable Pin
ECO VOUT
* Tab in the parts have GND level. (They are connected to the reverse side of this IC.) Do not connect to other wires or land patterns.
ABSOLUTE MAXIMUM RATINGS
Symbol VIN VECO VCE VOUT IOUT PD PD PD Topt Tstg Input Voltage Input Voltage(ECO Pin) Input Voltage( CE /CE Pin) Output Voltage Output Current Power Dissipation(SOT23-5)* Power Dissipation(SON-6)* Power Dissipation(HSON-6)* Operating Temperature Range Storage Temperature Range Item Rating 6.5 -0.3 ~ 6.5 -0.3 ~ 6.5 -0.3 ~ VIN+0.3 350 420 500 900 -40 ~ 85 -55 ~ 125 qC qC mW Unit V V V V mA
* ) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
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R1161x
ELECTRICAL CHARACTERISTICS
x R116.