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
External Reference Input
Reference Voltage Input
VREF
0
—
AVDD
V The reference input is capable of
rail-to-rail operation.
Internal Driver)
RDSON P-channel
RDSON N-channel
VEXT Rise Time
VEXT Fall Time
Error Amplifier (A1)
RDSon_P
—
RDSon_N
—
TRISE
—
TFALL
—
7.2
15
Ω
3.8
15
Ω
2.5
18
ns CL = 100 pF
Typical for VIN = 5V (Note 1)
2.7
18
ns CL = 100 pF
Typical for VIN = 5V (Note 1)
Input Offset Voltage
A1 Input Bias Current
Error Amplifier PSRR
Common Mode Input Range
Common Mode Rejection Ratio
Open-loop Voltage Gain
Low-level Output
Gain Bandwidth Product
Error Amplifier Sink Current
Error Amplifier Source Current
VOS
IBIAS
PSRR
VCM
AVOL
-5
—
—
GND - 0.3
—
80
VOL
—
GBWP
—
ISINK
4
ISOURCE
-2
-0.6
0.05
85.4
—
90
95
25
3.5
12
-9.8
+5
1
—
VIN
—
—
GND + 65
—
—
—
mV
µA
dB
V
dB
dB
mV
MHz
mA
mA
VIN = 3.0V to 5.0V, VCM = 1.2V
VIN = 5V, VCM = 0V to 2.5V
RL = 5 kΩ to VIN/2,
100 mV < VEAOUT < VIN - 100 mV,
VCM = 1.2V
RL = 5 kΩ to VIN/2
VIN = 5V
VIN = 5V, VREF = 1.2V,
VFB = 1.4V, VCOMP = 2.0V
VIN = 5V, VREF = 1.2V,
VFB = 1.0V, VCOMP = 2.0V,
Absolute Value
Current Sense (CS) Amplifier (A2)
Input Offset Voltage
CS Input Bias Current
CS Amplifier PSRR
VOS
-3.0
1.2
+3.0
mV
IBIAS
—
0.13
1
µA
PSRR
—
65
—
dB VIN = 3.0V to 5.0V, VCM = 0.12V,
GAIN = 10
Closed-loop Voltage Gain
A2VCL
—
Low-level Output
VOL
5
CS Sink Current
ISINK
5
CS Amplifier Source Current
ISOURCE
-5
Voltage Sense (VS) Amplifier (A3)
10
11
17.7
-19.5
—
V/V RL = 5 kΩ to VIN/2,
100 mV < VOUT < VIN - 100 mV,
VCM = +0.12V
GND + 50 mV RL = 5 kΩ to VIN/2
—
mA
—
mA
Input Offset Voltage
VOS
-5
0.9
+5
mV
VS Input Bias Current
IBIAS
—
0.001
1
µA
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.
DS22063B-page 6
© 2008 Microchip Technology Inc.
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