R5326x SERIES
Automatic Mode Shift Dual 150mA LDO
NO.EA-138-071113
OUTLINE
The R5326x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, Typ. 5.5µA low
supply current, and remarkably improved transient response compared with the conventional low supply current
voltage regulators. The supply current of IC itself is automatically shifts between fast mode and low power mode
depending on the load current. (The current threshold is fixed internally.) Each of these voltage regulator ICs
consists of a voltage reference unit, an error amplifier, resistors for setting the output voltage, a current limit
circuit for preventing from the destruction by an over current, and so on.
The chip enable function realizes the standby mode with ultra low supply current.
Since the packages for these ICs are SOT-23-6 and DFN(PLP)1820-6, and chip size package, WLCSP-6-P1,
dual LDO regulators are included in each package, high density mounting of the ICs on boards is possible.
FEATURES
Supply Current (Low Power Mode)...................Typ. 5.5µA×2 (VR1&VR2) (I
OUT
=0mA)
Supply Current (Fast Mode)..............................Typ. 50µA×2 (VR1&VR2) (I
OUT
=10mA)
Standby Current ................................................Typ. 0.1µA (VR1&VR2)
Input Voltage .....................................................1.4V to 6.0V
Output Voltage ..................................................0.8V to 4.2V
Dropout Voltage ................................................Typ. 0.19V (I
OUT
=150mA,
V
OUT
=2.8V)
Output Voltage Accuracy...................................±1.0% (V
OUT
>1.5V)
Ripple Rejection................................................Typ. 70dB (f=1kHz)
Typ. 60dB (f=10kHz)
•
Line Regulation .................................................Typ. 0.02%/V
•
Packages .........................................................WLCSP-6-P1, DFN(PLP)1820-6, SOT-23-6
•
Built-in fold-back protection circuit ....................Typ. 50mA (Current at short mode)
•
Ceramic Capacitor is recommended. ..............1.0µF to 3.3µF
(Depending on V
IN
and set V
OUT
. Refer to the electrical characteristics table.)
•
•
•
•
•
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APPLICATIONS
•
Power source for handheld communication equipment.
•
Power source for electrical appliances such as cameras, VCRs and camcorders.
•
Power source for battery-powered equipment.
1
R5326x
SELECTION GUIDE
The output voltage, auto discharge function*, and the taping type for the ICs can be selected at the user's
request. The selection can be made with designating the part number as shown below;
R5326xxxxx-xx-x
←Part
Number
↑ ↑ ↑ ↑ ↑
a b c d e
Code
a
Contents
Designation of Package Type:
N: SOT-23-6
K: DFN(PLP)1820-6
Z: WLCSP-6-P1
Setting combination of dual Output Voltage (V
OUT
):
Serial Number for Voltage Setting, Stepwise setting with a step of 0.1V in the range of
0.8V to 4.2V is possible for each channel.
Designation of Mask Option:
A: without auto discharge function* at OFF state.
B: with auto discharge function* at OFF state.
Designation of Taping Type:
Ex. TR (refer to Taping Specifications; for SOT-23-6 and DFN(PLP)1820-6),
E2 (for WLCSP-6-P1)
Designation of composition of plating:
−F
: Lead free plating (SOT-23-6, WLCSP-6-P1)
None : Au plating (DFN(PLP)1820-6)
b
c
d
e
*) When the mode is into standby with CE signal, auto discharge transistor turns on, and it makes the turn-off
speed faster than normal type.
3
R5326x
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT1
, I
OUT2
P
D
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (SOT-23-6) *
Power Dissipation (DFN(PLP)1820-6) *
Power Dissipation (WLCSP-6-P1) *
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
Item
Rating
6.5
−0.3
to 6.5
−0.3
to V
IN
+0.3
200
420
880
633
−40
to 85
−55
to 125
°C
°C
mW
Unit
V
V
V
mA
*) For Power Dissipation, please refer to PACKAGE INFORMATION to be described.
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under
any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation
above these absolute maximum ratings may cause degradation or permanent damage to the device.
These are stress ratings only and do not necessarily imply functional operation below these limits.
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