UNISONIC TECHNOLOGIES CO., LTD
LR9203
Preliminary
CMOS IC
C
L
CAPACITOR-LESS 500mA
LOW POWER CONSUMPTION
HIGH SPEED LDO REGULATOR
DESCRIPTION
4
5
1
2
3
SOT-25
(JEDEC MO-178)
The UTC
LR9203
is a CMOS-based low dropout regulator with
high output voltage accuracy, low dropout, high PSRR and low
quiescent current. The devices can provide stable output voltages
even without a load capacitor C
L
.
The C
L
capacitor-less is possible because phase compensation
is carried out internally unlike other LDOs where it is done
externally. Since the output capacitor and noise bypass capacitor
are able to be reduced, so saving the board design space.
When a C
L
capacitor is used, the IC can discharge the electric
charge stored at the output capacitor through the internal switch
while in standby state, and as a result the V
OUT
quickly returns to
the V
SS
level.
4
5
3
1
2
SOT-23-5
(JEDEC TO-236)
FEATURES
* Maximum Output Current: 500mA
* Output Accuracy: ±2.0%
* Output Voltage Range: 1.2V~5.0V (0.05V increments)
* Protection Current: Current Limiter (630mA TYP.), Short-circuit
Protection, Thermal Shutdown
* Dropout Voltage: 190mV @ V
OUT
=2.8V, I
OUT
=300mA
* Low Power Consumption: 15μA (TYP.), 0.5μA (in standby)
* High PSRR: 55dB @ 1kHz, V
OUT
=2.8V
* Operating Ambient Temperature: -40°C~+85°C
* C
L
Capacitor-Less: Internal Phase Compensation
ORDERING INFORMATION
Package
SOT-23-5
SOT-25
(1) R: Tape Reel
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Green Package
(5)Active
(2) AE5: SOT-23-5, AF5: SOT-25
(3) xx: refer to Marking Information
(4) G: Halogen Free and Lead Free, L: Lead Free
(5) D: with auto discharge function / CE high active
(5) P: without auto discharge function / no CE pin
Ordering Number
Lead Free
Halogen Free
LR9203xL-xx-AE5-R
LR9203xG-xx-AE5-R
LR9203xL-xx-AF5-R
LR9203xG-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
LR9203xG-xx-AE5-R
Packing
Tape Reel
Tape Reel
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QW-R102-082.d
LR9203
ABSOLUTE MAXIMUM RATING
PARAMETER
Preliminary
CMOS IC
SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
6.5
V
CE Input Voltage
V
CE
6.5
V
Power Dissipation
P
D
300
mW
Operating Ambient Temperature
T
OPR
40 ~ +85
°C
Storage Temperature
T
STG
-55 ~ +125
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. The power dissipation measured with the test board condition is listed as reference data.
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, unless otherwise specified)
SYMBOL
TEST CONDITIONS
CIRCUITS MIN
×0.98
(Note 4)
PARAMETER
UTC LR9203D Type
Output Voltage
TYP
MAX
×1.02
(Note 4)
UNIT
V
OUT (E)
V
CE
=V
IN
, I
OUT
=10mA
(Note 2)
Maximum Output Current I
OUTMAX
V
CE
=V
IN
Load Regulation
ΔV
OUT
V
CE
=V
IN
, 0.1mA≤I
OUT
≤300mA
Dropout Voltage (Note 5)
V
D
V
CE
=V
IN
, I
OUT
=300mA
Supply Current
I
SS
V
IN
=V
CE
=6.0V, I
OUT
=0mA
Stand-by Current
I
STB
V
IN
=6.0V, V
CE
=V
SS
ΔV
OUT
/
V
OUT (T)
+0.5V≤V
IN
≤6.0V,
Line Regulation
(ΔV
IN
∙V
OUT
) V
CE
=V
IN
, I
OUT
=30mA
Input Voltage
V
IN
Output Voltage
ΔV
OUT
/
V
CE
=V
IN
, I
OUT
=30mA,
Temperature
(ΔT
OPR
∙V
OUT
) -40°C≤Topr≤85°C
Characteristics
V
OUT (T)
≤4.75V,
V
IN
={V
OUT (T)
+1.0} V
DC
+0.5Vp-p
AC
,
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
Power Supply
PSRR
Rejection Ratio
V
OUT (T)
≥4.80V,
V
IN
=5.75V
DC
+0.5Vp-p
AC
,
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
Current Limit
I
LIM
V
CE
=V
IN
V
CE
=V
IN
,
Short-circuit Current
I
SHORT
Short V
OUT
to V
SS
level
CE High Level Voltage
V
CEH
CE Low Level Voltage
V
CEL
CE High Level Current
I
CEH
V
IN
=V
CE
=6.0V
CE Low Level Current
I
CEL
V
CE
=V
SS
CL Discharge Resistance
R
DCHG
V
IN
=6.0V, V
OUT
=5.0V, V
CE
=V
SS
(Note 10)
Thermal Shutdown
T
TSD
Junction Temperature
Detect Temperature
Thermal Shutdown
T
HYS
T
TSD
-T
TSR
Hysteresis Width
V
mA
mV
mV
μA
μA
%/V
V
ppm/°C
1
1
1
2
2
1
1
1
500
20
50
E-1 (Note 8)
15
30
0.01
0.5
E-2 (Note 9)
6.0
±30
3
55
dB
1
1
1
1
1
1
1
510
630
120
750
210
6.0
0.3
10
0.1
mA
mA
V
V
μA
μA
Ω
°C
°C
1.0
3.5
-0.1
6
600
150
25
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QW-R102-082.d
LR9203
PARAMETER
UTC LR9203P Type
Output Voltage
Maximum Output
Current
Load Regulation
Dropout Voltage (Note 5)
Supply Current
Line Regulation
Input Voltage
Output Voltage
Temperature
Characteristics
SYMBOL
V
OUT (E)
(Note 2)
I
OUTMAX
ΔV
OUT
V
D
I
SS
ΔV
OUT
/
(ΔV
IN
∙V
OUT
)
V
IN
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS (Cont.)
TEST CONDITIONS
CIRCUITS
MIN
×0.98
(Note 4)
TYP
MAX
×1.02
(Note 4)
UNIT
I
OUT
=10mA
1
0.1mA≤I
OUT
≤300mA
I
OUT
=300mA
V
IN
=6.0V, I
OUT
=0mA
V
OUT (T)
+0.5V≤V
IN
≤6.0V,
I
OUT
=30mA
1
1
2
1
1
1
V
mA
500
20
50
E-1
(Note 8)
15
30
E-2
(Note 9)
6.0
±30
mV
mV
μA
%/V
V
ppm/°C
ΔV
OUT
/
I
OUT
=30mA, -40°C≤T
OPR
≤85°C
(ΔT
OPR
∙V
OUT
)
V
OUT (T)
≤4.75V,
V
IN
={V
OUT (T)
+1.0} V
DC
+0.5Vp-p
AC
,
I
OUT
=30mA, f=1kHz
V
OUT (T)
≥4.80V,
V
IN
=5.75V
DC
+0.5Vp-p
AC
,
I
OUT
=30mA, f=1kHz
3
55
dB
Power Supply Rejection
Ratio
PSRR
Current Limit
I
LIM
1
510
630
750
mA
Short-circuit Current
I
SHORT
Short V
OUT
to V
SS
level
1
120
210
mA
Thermal Shutdown
T
TSD
Junction Temperature
150
°C
Detect Temperature
Thermal Shutdown
T
HYS
T
TSD
-T
TSR
25
°C
Hysteresis Width
Notes: 1. Unless otherwise stated regarding input voltage conditions, V
IN
=V
OUT (T)
(Note 3)+1.0V.
2. V
OUT (E)
: Effective output voltage (i.e. the output voltage when “V
OUT (T)
+1.0V” is provided at the V
IN
pin
while maintaining a certain I
OUT
value.)
3. V
OUT (T)
: Nominal output voltage.
4. Characteristics of the actual V
OUT (E)
by setting output voltage is shown in the voltage chart.
5. V
D
=V
IN1
(Note 7)-V
OUT1
(Note 6)
6. V
OUT1
is a voltage equal to 98% of the output voltage whenever an amply stabilized I
OUT
{V
OUT (T)
+1.0V} is
input.
7. V
IN1
is an input voltage when V
OUT1
appears at the V
OUT
pin while the input voltage is gradually decreased.
8. E-1: DROPOUT VOLTAGE (Refer to Voltage Chart.)
9. E-2: LINE REGULATION (Refer to Voltage Chart.)
10. This function is built in the UTC
LR9203D
series only. The UTC
LR9203P
series discharges by only
R1+R2 resistors as shown in the block diagrams.
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www.unisonic.com.tw
4 of 8
QW-R102-082.d
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