TC1014/TC1015/TC1185
50mA, 100mA and 150mA CMOS LDOs with Shutdown and Reference Bypass
Features
• Extremely Low Supply Current (50µA, Typ.)
• Very Low Dropout Voltage
• Choice of 50mA (TC1014), 100mA (TC1015) and
150mA (TC1016) Output
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Power Saving Shutdown Mode
• Reference Bypass Input for Ultra Low-Noise
Operation
• Over Current and Over Temperature Protection
• Space-Saving 5-Pin SOT-23A Package
• Pin Compatible Upgrades for Bipolar Regulators
Device Selection Table
Part Number
TC1014-xxVCT
TC1015-xxVCT
TC1185-xxVCT
Package
5-Pin SOT-23A
5-Pin SOT-23A
5-Pin SOT-23A
Junction
Temp. Range
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
NOTE:
xx indicates output voltages. Available output
voltages: 1.8, 2.5, 2.6, 2.7, 2.8, 2.85, 3.0, 3.3, 3.6, 4.0, 5.0.
Other output voltages are available. Please contact Microchip
Technology Inc. for details.
Package Type
5-Pin SOT-23A
V
OUT
5
Bypass
4
Applications
•
•
•
•
•
•
•
Battery Operated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular/GSM/PHS Phones
Linear Post-Regulator for SMPS
Pagers
TC1014
TC1015
TC1185
1
V
IN
2
GND
3
SHDN
NOTE:
5-Pin SOT-23A is equivalent to the EIAJ (SC-74A)
2002 Microchip Technology Inc.
DS21335B-page 1
©
TC1014/TC1015/TC1185
General Description
The TC1014/TC1015/TC1185 are high accuracy
(typically ±0.5%) CMOS upgrades for older (bipolar)
low dropout regulators such as the LP2980. Designed
specifically for battery-operated systems, the devices’
CMOS construction eliminates wasted ground current,
significantly extending battery life. Total supply current
is typically 50µA at full load (20 to 60 times lower than
in bipolar regulators).
The devices’ key features include ultra low noise oper-
ation (plus optional Bypass input), fast response to step
changes in load, and very low dropout voltage –
typically 85mV (TC1014); 180mV (TC1015); and
270mV (TC1185) at full load. Supply current is reduced
to 0.5µA (max) and V
OUT
falls to zero when the
shutdown input is low. The devices incorporate both
over-temperature and over-current protection.
The TC1014/TC1015/TC1185 are stable with an output
capacitor of only 1µF and have a maximum output
current of 50mA, 100mA and 150mA, respectively. For
higher output current regulators, please see the
TC1107/TC1108/TC1173 (I
OUT
= 300mA) data sheets.
Typical Application
V
IN
1
V
IN
V
OUT
5
+
1µF
V
OUT
2
TC1014
TC1015
TC1185
GND
3
SHDN
Bypass
4
470pF
Reference
Bypass Cap
(Optional)
Shutdown Control
(from Power Control Logic)
©
DS21335B-page 2
2002 Microchip Technology Inc.
TC1014/TC1015/TC1185
1.0
ELECTRICAL
CHARACTERISTICS
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
Absolute Maximum Ratings*
Input Voltage......................................................... 6.5V
Output Voltage ...........................(-0.3V) to (V
IN
+ 0.3V)
Power Dissipation ............... Internally Limited
(Note 7)
Maximum Voltage on Any Pin .........V
IN
+0.3V to -0.3V
Operating Temperature Range ......-40°C < T
J
< 125°C
Storage Temperature ......................... -65°C to +150°C
TC1014/TC1015/TC1185 ELECTRICAL SPECIFICATIONS
Electrical Characteristics:
V
IN
= V
R
+ 1V, I
L
= 100µA, C
L
= 3.3µF, SHDN > V
IH
, T
A
= 25°C, unless otherwise noted.
Boldface
type
specifications apply for junction temperatures of -40°C to +125°C.
Symbol
V
IN
I
OUT
MAX
Parameter
Input Operating Voltage
Maximum Output Current
Min
2.7
50
100
150
V
R
– 2.5%
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ
—
—
—
—
20
40
0.05
0.5
0.5
2
65
85
180
270
50
0.05
64
300
0.04
160
10
600
Max
6.0
—
—
—
—
—
0.35
2
3
—
—
120
250
400
80
0.5
—
450
—
—
—
—
Units
V
mA
Device
Test Conditions
Note 1
TC1014
TC1015
TC1185
Note 2
Note 3
(V
R
+ 1V)
≤
V
IN
≤
6V
TC1014; TC1015 I
L
= 0.1mA to I
OUT
MAX
I
L
= 0.1mA to I
OUT
MAX
TC1185
(Note 4)
I
L
= 100µA
I
L
= 20mA
I
L
= 50mA
TC1015; TC1185 I
L
= 100mA
I
L
= 150mA
(Note 5)
TC1185
SHDN = V
IH
, I
L
= 0
SHDN = 0V
F
RE
≤
1kHz
V
OUT
= 0V
Notes 6, 7
V
OUT
TCV
OUT
∆V
OUT
/∆V
IN
Output Voltage
V
OUT
Temperature Coefficient
Line Regulation
V
R
±0.5%
V
R
+ 2.5%
V
ppm/°C
%
%
∆V
OUT
/V
OUT
Load Regulation
V
IN
-V
OUT
Dropout Voltage
mV
I
IN
I
INSD
PSRR
I
OUT
SC
∆V
OUT
/∆P
D
T
SD
∆T
SD
eN
Supply Current (Note 8)
Shutdown Supply Current
Power Supply Rejection
Ratio
Output Short Circuit Current
Thermal Regulation
Thermal Shutdown Die
Temperature
Thermal Shutdown
Hysteresis
Output Noise
µA
µA
dB
mA
V/W
°C
°C
nV/√Hz
I
L
= I
OUT
MAX
, F = 10kHz
470pF from Bypass
to GND
Note
1:
2:
3:
4:
5:
6:
7:
8:
The minimum V
IN
has to meet two conditions: V
IN
≥
2.7V and V
IN
≥
V
R
+ V
DROPOUT
.
V
R
is the regulator output voltage setting. For example: V
R
= 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V.
TC V
OUT
= (V
OUT
MAX
– V
OUT
MIN
)x 10
6
V
OUT
x
∆T
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range
from 1.0mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal
regulation specification.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value at a 1V
differential.
Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or
line regulation effects. Specifications are for a current pulse equal to I
L
MAX
at V
IN
= 6V for T = 10 msec.
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
thermal resistance from junction-to-air (i.e., T
A
, T
J
,
θ
JA
). Exceeding the maximum allowable power dissipation causes the device to initiate
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
Apply for Junction Temperatures of -40°C to +85°C.
2002 Microchip Technology Inc.
DS21335B-page 3
©
TC1014/TC1015/TC1185
TC1014/TC1015/TC1185 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics:
V
IN
= V
R
+ 1V, I
L
= 100µA, C
L
= 3.3µF, SHDN > V
IH
, T
A
= 25°C, unless otherwise noted.
Boldface
type
specifications apply for junction temperatures of -40°C to +125°C.
Symbol
SHDN Input
V
IH
V
IL
Note
1:
2:
3:
4:
Parameter
Min
Typ
Max
Units
Test Conditions
SHDN Input High Threshold
SHDN Input Low Threshold
45
—
—
—
—
15
%V
IN
%V
IN
V
IN
= 2.5V to 6.5V
V
IN
= 2.5V to 6.5V
5:
6:
7:
8:
The minimum V
IN
has to meet two conditions: V
IN
≥
2.7V and V
IN
≥
V
R
+ V
DROPOUT
.
V
R
is the regulator output voltage setting. For example: V
R
= 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V.
TC V
OUT
= (V
OUT
MAX
– V
OUT
MIN
)x 10
6
V
OUT
x
∆T
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range
from 1.0mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal
regulation specification.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value at a 1V
differential.
Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or
line regulation effects. Specifications are for a current pulse equal to I
L
MAX
at V
IN
= 6V for T = 10 msec.
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the
thermal resistance from junction-to-air (i.e., T
A
, T
J
,
θ
JA
). Exceeding the maximum allowable power dissipation causes the device to initiate
thermal shutdown. Please see Section 4.0 Thermal Considerations for more details.
Apply for Junction Temperatures of -40°C to +85°C.
©
DS21335B-page 4
2002 Microchip Technology Inc.
TC1014/TC1015/TC1185
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
Pin No.
(5-Pin SOT-23A)
1
2
3
PIN FUNCTION TABLE
Symbol
V
IN
GND
SHDN
Unregulated supply input.
Ground terminal.
Shutdown control input. The regulator is fully enabled when a logic high is applied to this input.
The regulator enters shutdown when a logic low is applied to this input. During shutdown,
output voltage falls to zero, ERROR is open circuited and supply current is reduced to 0.5µA
(max).
Reference bypass input. Connecting a 470pF to this input further reduces output noise.
Regulated voltage output.
Description
4
5
Bypass
V
OUT
2002 Microchip Technology Inc.
DS21335B-page 5
©
京公网安备 11010802033920号
EEWORLD
