MAX5003 データシートの表示（PDF） - Maxim Integrated
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MAX5003 Datasheet PDF : 16 Pages
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High-Voltage PWM
Power-Supply Controller
ELECTRICAL CHARACTERISTICS (continued)
(V+ = VES = VDD = +12V, VINDIV = 2V, VCON = 0, RFREQ = RMAXTON = 200kΩ, TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETERS
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
CURRENT LIMIT
CS Threshold Voltage
VCS
CS Input Bias Current
ICS
Overcurrent Delay
tD
CS Blanking Time
tB
ERROR AMPLIFIER
Voltage Gain
AV
Unity-Gain Bandwidth
BW
Phase Margin
φ
Output Clamp Low
VCOMPL
Output Clamp High
VCOMPH
FEEDBACK INPUT AND SET POINT
FB Regulation Voltage
VSET
FB Bias Current
IFB
FB VSET Tempco
TCFB
UNDERVOLTAGE LOCKOUT
INDIV Undervoltage Lockout
VINDIVLO
INDIV Hysteresis
VHYST
INDIV Bias Current
MAIN OSCILLATOR—EXTERNAL MODE
FREQ Input Low
VIL
FREQ Input High
VIH
FREQ Output Low
IOL
VCON = 1.25V
0 < VCS < 0.1V
From end of blanking time 25mV overdrive
ICOMP = 5µA; VCOMP = 0.5V, 2.5V
RLOAD = 200kΩ, CLOAD = 100pF
AVOL = 1V/V, CLOAD = 100pF
At COMP
At COMP
FB = COMP, VCON = 1.5V
VFB = 1.5V
V+ = VES = VDD =
10.8V and 18.75V
VINDIV falling
VINDIV rising
VINDIV = 1.28V
VCON = 3.0V
VCON = 3.0V
VFREQ = 5V, VCON = 3.0V
80
100
120
mV
-1
+1
µA
240
ns
70
ns
60
80
1.2
65
0.25
3.00
dB
MHz
degrees
V
V
1.448
-1
1.485
0.1
100
1.522
+1
V
µA
ppm/°C
1.15 1.20 1.25
V
1.23 1.32 1.45
125
mV
-1
0.01
+1
µA
0.8
V
2.7
V
1
µA
External Oscillator Maximum
Low Time
tEXT (Note 2)
8
13
µs
FREQ Range
Frequency Range
FREQ HI/LO Pulse Width
fFREQ
fS
MAIN OSCILLATOR—INTERNAL MODE
FREQ Resistor Range
RFREQ
Oscillator Frequency
FREQ Output Current High
IOH
FREQ Output Current Low
IOL
MAXIMUM DUTY CYCLE (MAXTON)
fS = 1/4 fFREQ
VFREQ = 0
VFREQ = 1.5V
200
1200 kHz
50
300 kHz
150
ns
50
500
kΩ
80
100
120
kHz
300
µA
1
µA
Maximum Programmable
Duty Cycle
VINDIV = 1.25V
75
%
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