R5322N SERIES
120mA 2ch LDO REGULATORS
NO.EA-077-0606
OUTLINE
The R5322N Series are voltage regulator ICs with high output voltage accuracy, low supply current, low
dropout, and high ripple rejection by CMOS process. 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 and prolong the battery life of each system. The line transient response and load transient response of
the R5322N Series are excellent, thus these ICs are very suitable for the power supply for hand-held
communication equipment.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is
SOT-23-6W package, and include 2ch LDO regulators each, high density mounting of the ICs on boards is
possible.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
Ultra-Low Supply Current.............................................. Typ. 75µA (VR1, VR2)
Standby Current ............................................................ Typ. 0.1µA (VR1, VR2)
Output Voltage ..............................................................1.5V to 4.0V
Low Dropout Voltage..................................................... Typ. 0.15V (I
OUT
=100mA
,V
OUT
=3.0V)
High Ripple Rejection ................................................... Typ. 75dB (f=1kHz)
High Output Voltage Accuracy ......................................±2.0%
Low Temperature-Drift Coefficient of Output Voltage.... Typ.
±100ppm/°C
Excellent Line Regulation ............................................. Typ.0.05%/V
Small Packages .......................................................... SOT-23-6W
Built-in chip enable circuit (A/B: active high)
Built-in fold-back protection circuit ................................ Typ. 40mA (Current at short mode)
APPLICATIONS
•
Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
•
Power source for electrical appliances such as cameras, VCRs and camcorders.
•
Power source for battery-powered equipment.
1
R5322N
BLOCK DIAGRAMS
R5322NxxxA
CE1 1
6 V
OUT1
Error Amp.
Vref
Current Limit
R1_1
R2_1
V
DD
2
R1_2
Error Amp.
Vref
5 GND
R2_2
Current Limit
CE2 3
4 V
OUT2
R5322NxxxB
CE1 1
6 V
OUT1
Error Amp.
Vref
Current Limit
R1_1
R2_1
V
DD
2
R1_2
Error Amp.
Vref
Current Limit
5 GND
R2_2
CE2 3
4 V
OUT2
2
R5322N
SELECTION GUIDE
The output voltage, mask option, 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;
R5322Nxxxx-xx-x
←
Part Number
↑ ↑ ↑ ↑
a b c d
Code
Contents
a
b
c
d
Setting combination of 2ch Output Voltage (V
OUT
) :
Serial Number for Voltage Setting, Stepwise setting with a step of 0.1V in the range of
1.5V to 4.0V is possible for each channel.
Designation of Mask Option :
A Version: without auto discharge function at OFF state.
B Version: with auto discharge function at OFF state.
Designation of Taping Type :
Ex. TR (refer to Taping Specifications; TR type is the standard direction.)
Designation of Composition of pin plating.
-F : Lead free plating
3
R5322N
PIN CONFIGURATION
SOT-23-6W
6
5
4
V
OUT1
GND V
OUT2
(mark side)
CE1
V
DD
CE2
1
2
3
PIN DESCRIPTIONS
•
SOT-23-6W
Pin No
Symbol
Pin Description
1
2
3
4
5
6
CE1
V
DD
CE2
V
OUT2
GND
V
OUT1
Chip Enable Pin 1
Input Pin
Chip Enable Pin 2
Output Pin 2
Ground Pin
Output Pin 1
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
Unit
V
IN
V
CE
V
OUT
I
OUT1
I
OUT2
P
D
Topt
Tstg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current 1
Output Current 2
Power Dissipation (SOT-23-6W) *
Note1
Operating Temperature Range
Storage Temperature Range
6.5
−
0.3 to V
IN
+
0.3
−
0.3 to V
IN
+
0.3
V
V
V
mA
mA
mW
°
C
°
C
130
130
430
−
40 to 85
−
55 to 125
Note1: For Power Dissipation please refer to PACKAGE INFORMATION to be described.
4
R5322N
ELECTRICAL CHARACTERISTICS
•
R5322NxxxA/B
Topt=25°C
Symbol
Item
Conditions
Min.
×
0.98
Typ.
Max.
×
1.02
Unit
V
OUT
I
OUT
∆
V
OUT
/
∆
I
OUT
Output voltage
Output Current
Load regulation
Dropout Voltage
Supply Current
Supply Current (Standby)
Line regulation
V
IN
=
Set V
OUT
+1V,
1mA
<
I
OUT
<
30mA
=
=
V
IN
−
V
OUT
=
1.0V
V
mA
mV
120
V
DIF
I
SS
Istandby
∆
V
OUT
/
∆
V
IN
V
IN
=
Set V
OUT
+1V,
12
40
1mA
<
I
OUT
<
120mA
=
=
Refer to the ELECTRICAL CHARACTERISTICS
by OUTPUT VOLTAGE
V
IN
=
Set V
OUT
+1V
V
IN
=
V
CE
=
Set V
OUT
+1V
Set V
OUT
+
0.5V
<
V
IN
<
6.0V
=
=
I
OUT
=
30mA
(In case that V
OUT
<
1.6,
=
<
V
IN
<
6.0))
2.2V
=
=
f
=
1kHz,Ripple 0.5Vp-p,
V
IN
=
Set V
OUT
+1V,I
OUT
=
30mA
2.2
I
OUT
=
30mA
−
40°C
<
Topt
=
V
OUT
=
0V
1.5
1.5
0.0
BW
=
10Hz to 100kHz
V
CE
=
0V
30
70
<
=
75
0.1
0.05
150
1.0
0.20
µ
A
µ
A
%/V
RR
V
IN
∆
V
OUT
/
∆
Topt
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Low Output Nch Tr. ON
Resistance (of B version)
75
6.0
±
100
dB
V
ppm
/
°
C
mA
16.0
V
IN
0.3
M
Ω
V
V
µ
Vrms
Ω
85°C
Ilim
R
PD
V
CEH
V
CEL
en
R
LOW
40
4.0
•
Electrical Characteristics by Output Voltage
Output Voltage
V
OUT
(V)
Dropout Voltage V
DIF
(V)
Condition
Typ.
Max.
1.5V
1.7V
1.9V
2.1V
2.8V
<
=
<
=
<
=
<
=
<
=
V
OUT
< 1.6V
V
OUT
< 1.8V
V
OUT
< 2.0V
V
OUT
< 2.7V
V
OUT
< 4.0V
I
OUT
=
120mA
0.36
0.30
0.28
0.24
0.18
0.70
0.50
0.45
0.40
0.30
5
51单片机
