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SC1453-3.0ISKTRT [SEMTECH]

Fixed Positive LDO Regulator, 3V, 0.27V Dropout, PDSO5, SOT-23, 5 PIN;
SC1453-3.0ISKTRT
型号： SC1453-3.0ISKTRT
厂家： SEMTECH CORPORATION    SEMTECH CORPORATION
描述：

Fixed Positive LDO Regulator, 3V, 0.27V Dropout, PDSO5, SOT-23, 5 PIN

光电二极管
文件： 总5页 (文件大小：119K)
中文：  中文翻译
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SC1453  
150mA Ultra Low Dropout  
Regulator with Low Noise Bypass  
PRELIMINARY  
POWER MANAGEMENT  
Description  
Features  
The SC1453 is a low dropout linear regulator that oper-  
ates from a +2.5V to +6.5V input range and delivers up  
to 150mA. A PMOS pass transistor allows the low 75µA  
supply current to remain independent of load, making  
these devices ideal for battery operated portable  
equipment such as cellular phones, cordless phones and  
personal digital assistants.  
u “2982/5205” compatible pinout  
u Guaranteed 150 mA output current  
u Very small external components - designed to work  
with ceramic capacitors  
u Low 25µVRMS output noise  
u Very low supply current  
u Thermal overload protection  
u Reverse battery protection  
u Low power shutdown  
u Full industrial temperature range  
u Surface mount packaging (5 pin SOT-23)  
The SC1453 has a bandgap reference bypass pin for  
very low noise operation - a 10nF (typ.) capacitor is  
connected between this pin and ground. Other features  
include low powered shutdown, short circuit protection,  
thermal shutdown protection and reverse battery  
protection. The SC1453 comes in the tiny 5 lead SOT-23  
package.  
Applications  
u Battery Powered Systems  
u Cellular Telephones  
u Cordless Telephones  
u Personal Digital Assistants  
u Portable Instrumentation  
u Modems  
u PCMCIA cards  
Typical Application Circuit  
U1  
SC1453  
1
3
5
VIN  
VOUT  
IN  
OUT  
C1  
1uF  
4
C3  
1uF  
EN  
BYP  
GND  
2
C2  
10nF  
Revision 2, December 2000  
1
www.semtech.com  
SC1453  
POWER MANAGEMENT  
PRELIMINARY  
Absolute Maximum Ratings  
Parameter  
Symbol  
Maximum  
Units  
Input Supply Voltage  
VIN  
qJA  
-0.6 to +7  
256  
V
°C/W  
°C/W  
°C  
Thermal Resistance Junction to Ambient  
Thermal Resistance Junction to Case  
Operating Ambient Temperature Range  
Operating Junction Temperature Range  
Storage Temperature Range  
81  
qJC  
TA  
-40 to +85  
-40 to +125  
-65 to 150  
300  
TJ  
°C  
TSTG  
TLEAD  
ESD  
°C  
Lead Temperature (Soldering) 10 Sec.  
ESD Rating  
°C  
2
kV  
Electrical Characteristics  
Unless specified: VIN = VOUT + 1V, VEN = VIN, IOUT = 100µA, TA = 25°C. Values in bold apply over full operating ambient temperature range.  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max  
Units  
IN  
Supply Voltage Range  
Supply Current  
VIN  
IQ  
2.25  
6.50  
130  
160  
1.0  
V
IOUT = 0ma to150mA  
VIN = 6.5V, VEN = 0V  
75  
µA  
0.1  
µA  
1.5  
OUT  
Output Voltage (1)  
VOUT  
IOUT = 1mA  
-1.5%  
VOUT  
2.5  
-5  
+1.5%  
+3.0%  
10  
V
0mA £ IOUT £ 150mA, VOUT +1V £ VIN £ 5.5V -3.0%  
(VOUT(NOM) + 0.1V) £ VIN £ 5.5V, IOUT = 1mA  
Line Regulation (1)  
Load Regulation (1)  
REG(LINE)  
REG(LOAD)  
mV  
mV  
12  
IOUT = 0.1mA to 150mA  
-20  
-30  
www.semtech.com  
ã 2000 Semtech Corp.  
2
SC1453  
POWER MANAGEMENT  
PRELIMINARY  
Electrical Characteristics (Cont.)  
Unless specified: VIN = VOUT + 1V, VEN = VIN, IOUT = 100µA, TA = 25°C. Values in bold apply over full operating ambient temperature range.  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max Units  
Out (Cont.)  
Current Limit  
Dropout Voltage(1)(2)  
ILIM  
VD  
400  
mA  
mV  
IOUT = 1mA  
1
IOUT = 50mA  
50  
70  
90  
mV  
I
OUT = 100mA  
100  
150  
45  
140  
180  
210  
270  
mV  
IOUT = 150mA  
mV  
Output Voltage Noise  
en  
10Hz to 100kHz, IOUT = 1mA  
CBYP = 10nF, COUT = 1µF  
µVRMS  
COUT = 100µF  
25  
60  
Power Supply Rejection Ratio  
EN  
PSRR  
f = 120Hz, CBYP = 10nF  
dB  
V
Enable Input Threshold  
VIH  
VIL  
IEN  
1.6  
0.4  
Enable Input Bias Current(3)  
Over Temperature Protection  
High Trip Level  
0V £ VEN £ VIN  
-0.5  
0
+0.5  
µA  
THI  
150  
20  
°C  
°C  
Hysteresis  
THYST  
NOTES:  
(1) Low duty cycle pulse testing with Kelvin connections required.  
(2) Defined as the input to output differential at which the output voltage drops 100mV below the value measured  
at a differential of 1V. Not measurable on 1.5V and 1.8V parts due to minimum VIN constraints.  
(3) Guaranteed by design.  
www.semtech.com  
ã 2000 Semtech Corp.  
3
SC1453  
POWER MANAGEMENT  
PRELIMINARY  
Pin Configuration  
Ordering Information  
Part Number  
Package  
Top View  
SC1453-X.XISKTR (1)(2)  
SOT-23-5  
Notes:  
(1) Where -X.X denotes voltage options. Available  
voltagesare:1.5V,1.8V,2.5V,2.7V,2.8V,3.0V and3.3V.  
(2) Only available in tape and reel packaging. A reel  
contains 3000 devices.  
SOT-23-5L  
Pin Descriptions  
Pin #  
Pin Name  
Pin Function  
Input pin.  
1
2
3
4
IN  
GND  
EN  
Ground pin. Can be used for heatsinking if needed.  
Active high enable pin. Connect to IN if not being used.  
BYP  
Reference bypass. Connect a 10nF capacitor (typical, 1nF minimum) between this pin  
and GND to reduce output noise.  
5
OUT  
Regulator output, sourcing up to 150mA.  
Block Diagram  
www.semtech.com  
ã 2000 Semtech Corp.  
4
SC1453  
POWER MANAGEMENT  
PRELIMINARY  
Outline Drawing - SOT-23-5  
Land Pattern - SOT-23-5  
Contact Information  
Semtech Corporation  
Power Management Products Division  
652 Mitchell Rd., Newbury Park, CA 91320  
Phone: (805)498-2111 FAX (805)498-3804  
www.semtech.com  
ã 2000 Semtech Corp.  
5

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