MAX1545ETL データシートの表示（PDF） - Maxim Integrated
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MAX1545ETL
Maxim Integrated
MAX1545ETL Datasheet PDF : 43 Pages
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Dual-Phase, Quick-PWM Controllers for
Programmable CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, VCC = VDD = VSHDN = VTON = VSKIP = VS0 = VS1 = VCODE = 5V, VFB = VCMP = VCMN = VCSP = VCSN
= 1.3V, OFS = SUS = GNDS = D0–D4 = GND; TA = 0°C to +85°C, unless otherwise specified. Typical values are at TA = +25°C.)
PARAMETER
D0–D4 Input Current
CODE Input High Voltage
CODE Input Low Voltage
CODE Input Current
SYMBOL
D0–D4
CONDITIONS
MIN TYP MAX UNITS
-2
+2
µA
2.4
V
0.8
V
-1
+1
µA
High
VCC -
0.4
Four-Level Input Logic Levels
Four-Level Input Current
TON, S0–S1
Open
3.15
REF
1.65
Low
TON, S0–S1 forced to GND or VCC
-3
3.85
V
2.35
0.4
+3
µA
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V+ = 15V, VCC = VDD = VSHDN = VTON = VSKIP = VS0 = VS1 = VCODE = 5V, VFB = VCMP = VCMN = VCSP = VCSN
= 1.3V, OFS = SUS = GNDS = D0–D4 = GND; TA = -40°C to +100°C, unless otherwise specified.) (Note 5)
PARAMETER
PWM CONTROLLER
Input Voltage Range
DC Output Voltage Accuracy
(Note 2)
SYMBOL
CONDITIONS
Battery voltage, V+
VCC, VDD
V+ = 4.5V to 28V,
includes load
regulation error
DAC codes ≥ 1V
DAC codes from
0.60V to 1V
MIN TYP MAX UNITS
4
28
V
4.5
5.5
-13
+13
mV
-20
+20
OFS Input Range
0
2
V
OFS Gain
GNDS Gain
TIME Frequency Accuracy
AOFS
AGNDS
fTIME
ΔVOUT/ΔVOFS;
ΔVOFS = VOFS, VOFS = 0 to 1V
ΔVOUT/ΔVOFS;
ΔVOFS = VOFS - VREF, VOFS = 1V to 2V
ΔVOUT/ΔVGNDS
1000kHz nominal, RTIME = 15kΩ
500kHz nominal, RTIME = 30kΩ
250kHz nominal, RTIME = 60kΩ
TON = GND
(550kHz)
-0.131
-0.131
0.94
880
450
220
150
-0.115
V/V
-0.115
1.01
V/V
1120
550
kHz
280
210
On-Time (Note 3)
TON = REF
315
tON
V+ = 12V,
VFB = VCCI = 1.2V
(300kHz)
TON = open
470
(200kHz)
395
ns
580
TON = VCC
910
(100kHz)
1150
Minimum Off-Time (Note 3)
TON = GND
tOFF(MIN) TON = VCC, open, or REF
380
ns
490
6 _______________________________________________________________________________________
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