MCP1631 查看數據表（PDF） - Microchip Technology
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MCP1631 Datasheet PDF : 34 Pages
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MCP1631/HV/MCP1631V/VHV
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, VIN = 3.0V to 5.5V, FOSC = 1 MHz with 10% Duty Cycle, CIN = 0.1 µF,
VDD for typical values = 5.0V, TA for typical values = +25°C, TA = -40°C to +125°C for all minimum and maximums.
Parameters
Sym
Min
Typ
Max Units
Conditions
Line Regulation
Load Regulation
Dropout Voltage
Note 2, Note 5
Output Delay Time
Output Noise
ΔVOUT/
-0.3
(VOUTXΔ
VIN)
ΔVOUT/
-2.5
VOUT
VDROPOUT
—
—
TDELAY
—
eN
—
±0.1
±1.0
330
525
1000
8
+0.3
+2.5
650
725
—
—
%/V (VOUT(MAX) + VDROPOUT(MAX)) ≤
VIN ≤ 16V Note 2
% IL = 1.0 mA to 250 mA, Note 4
mV
mV
µs
µV/
(Hz)1/2
IL = 250 mA, VR = 5.0V
IL = 250 mA, VR = 3.3V
VIN = 0V to 6V, VOUT = 90% VR,
RL = 50Ω resistive
IL = 50 mA, f = 1 kHz, COUT =
1 µF
Power Supply Ripple Rejection
PSRR
—
Ratio
Protection Features
44
—
dB f = 100 Hz, COUT = 1 µF,
IL = 100 µA,
VINAC =100 mV pk-pk,
CIN = 0 µF, VR = 1.2V
Thermal Shutdown
TSHD
—
150
—
°C
Thermal Shutdown Hysteresis
TSHD_HYS
—
18
—
°C
Note 1: External Oscillator Input (OSCIN) rise and fall times between 10 ns and 10 µs were determined during device
characterization testing. Signal levels between 0.8V and 2.0V with rise and fall times measured between 10% and 90%
of maximum and minimum values. Not production tested. Additional timing specifications were fully characterized and
specified that are not production tested.
2: The minimum VIN must meet two conditions: VIN ≥ 3.5V and VIN ≥ (VOUT(MAX) + VDROPOUT(MAX)).
3: TCVOUT = (VOUT-HIGH - VOUT-LOW) *106 / (VR * ΔTemperature), VOUT-HIGH = highest voltage measured over the
temperature range. VOUT-LOW = lowest voltage measured over the temperature range.
4: Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Changes in output
voltage due to heating effects are determined using thermal regulation specification TCVOUT.
5: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its measured
value with an applied input voltage of VOUT(MAX) + VDROPOUT(MAX) or 3.5V, whichever is greater.
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits are specified for: VIN + 3.0V to 5.5V
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Operating Junction Temperature
Range
Storage Temperature Range
Maximum Junction Temperature
Package Thermal Resistances
Thermal Resistance, 20L-TSSOP
Thermal Resistance, 20L-SSOP
Thermal Resistance, 20L-QFN
TJ
-40
—
+125
°C Steady State
TA
-65
—
+150
°C
TJ
—
—
+150
°C Transient
θJA
—
90
θJA
—
89.3
θJA
—
43
—
°C/W Typical 4 Layer board with
interconnecting vias
—
°C/W Typical 4 Layer board with
interconnecting vias
—
°C/W Typical 4 Layer board with
interconnecting vias
DS22063B-page 8
© 2008 Microchip Technology Inc.
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