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TC1313-AM1EMF View Datasheet(PDF) - Microchip Technology

Part Name
Description
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TC1313-AM1EMF
Microchip
Microchip Technology Microchip
TC1313-AM1EMF Datasheet PDF : 28 Pages
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TC1313
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VIN1 = VIN2 = SHDN1,2 = 3.6V, COUT1 = CIN = 4.7 µF, COUT2 = 1µF, L = 4.7 µH, VOUT1 (ADJ) = 1.8V,
IOUT1 = 100 ma, IOUT2 = 0.1 mA TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Synchronous Buck Regulator (VOUT1)
Adjustable Output Voltage Range VOUT1
Adjustable Reference Feedback
Voltage (VFB1)
VFB1
Feedback Input Bias Current
(IFB1)
IVFB1
Output Voltage Tolerance Fixed
(VOUT1)
VOUT1
Line Regulation (VOUT1)
VLINE-REG
Load Regulation (VOUT1)
VLOAD-REG
0.8
0.78
-2.5
0.8
-1.5
±0.3
0.2
0.2
4.5
0.82
+2.5
V
V
nA
%
Note 2
%/V VIN = VR+1V to 5.5V,
ILOAD = 100 mA
%
VIN = VR + 1.5V, ILOAD = 100 mA to
500 mA (Note 1)
Dropout Voltage VOUT1
VIN – VOUT1
280
mV
IOUT1 = 500 mA, VOUT1 = 3.3V
(Note 5)
Internal Oscillator Frequency
Start Up Time
RDSon P-Channel
RDSon N-Channel
LX Pin Leakage Current
FOSC
TSS
RDSon-P
RDSon-N
ILX
Positive Current Limit Threshold
LDO Output (VOUT2)
Output Voltage Tolerance (VOUT2)
Temperature Coefficient
Line Regulation
Load Regulation, VOUT2 2.5V
Load Regulation, VOUT2 < 2.5V
Dropout Voltage VOUT2 > 2.5V
+ILX(MAX)
VOUT2
TCVOUT
ΔVOUT2/
ΔVIN
ΔVOUT2/
IOUT2
ΔVOUT2/
IOUT2
VIN – VOUT2
Power Supply Rejection Ratio
PSRR
1.6
-1.0
-2.5
-0.2
-0.75
-0.90
Output Noise
eN
2.0
2.4
0.5
450
650
450
650
±0.01
1.0
700
MHz
ms
mΩ
mΩ
μA
mA
TR = 10% to 90%
IP = 100 mA
IN = 100 mA
SHDN = 0V, VIN = 5.5V, LX = 0V,
LX = 5.5V
±0.3
25
±0.02
0.1
0.1
137
205
62
1.8
+2.5
+0.2
%
ppm/°C
%/V
Note 2
Note 3
(VR+1V) VIN 5.5V
+0.75
%
IOUT2 = 0.1 mA to 300 mA (Note 4)
+0.90
%
IOUT2 = 0.1 mA to 300 mA (Note 4)
300
mV IOUT2 = 200 mA (Note 5)
500
IOUT2 = 300 mA
dB
f = 100 Hz, IOUT1 = IOUT2 = 50 mA,
CIN = 0 µF
µV/(Hz)½ f = 1 kHz, IOUT2 = 50 mA,
SHDN1 = GND
Output Short Circuit Current
(Average)
IOUTsc2
240
mA
RLOAD2 1Ω
Note 1:
2:
3:
4:
5:
6:
7:
8:
The Minimum VIN has to meet two conditions: VIN 2.7V and VIN VRX + VDROPOUT, VRX = VR1 or VR2.
VRX is the regulator output voltage setting.
TCVOUT2 = ((VOUT2max – VOUT2min) * 106)/(VOUT2 * DT).
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested
over a load range from 0.1 mA to the maximum specified output current.
Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its
nominal value measured at a 1V differential.
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. TA, TJ, θJA). Exceeding the maximum allowable power
dissipation causes the device to initiate thermal shutdown.
The integrated MOSFET switches have an integral diode from the LX pin to VIN, and from LX to PGND. In cases where
these diodes are forward-biased, the package power dissipation limits must be adhered to. Thermal protection is not
able to limit the junction temperature for these cases.
VIN1 and VIN2 are supplied by the same input source.
© 2005 Microchip Technology Inc.
DS21974A-page 5
 

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