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8 ? POWER-GOOD OUTPUTS PGOOD_ Threshold VFB_ rising 88.5 92.5 96.5 % VFB(NOMINAL) VFB_ falling 85.5 89.5 93.5 PGOOD_ Output Leakage ILEAK_PGD VPGOOD_ = 28V, VEN_ = 5V, VFB_ = 0.8V

1 ?A PGOOD_ Output Low Voltage VPGOOD_L IPGOOD_ = 2mA, EN_ = SGND 0.4 V THERMAL SHUTDOWN Thermal Shutdown Threshold +150 °C Thermal Shutdown Hysteresis Temperature falling

20 °C ??4 T SW

24806 1 R (k ) (24806 has a unit). (f (kHz))1.0663 farad ? = Note 3: All Electrical Characteristics limits over temperature are 100% tested at room tempture and guaranteed by design over the specified temperature range. Note 4: Select RT as EFFICIENCY vs. LOAD CURRENT MAX15023 toc01 LOAD CURRENT (A) EFFICIENCY (%)

10 1

35 40

45 50

55 60

65 70

75 80

85 90

95 30 0.1

100 VIN = 12V VOUT1 = 1.2V VOUT1 = 3.3V EFFICIENCY vs. LOAD CURRENT MAX15023 toc02 LOAD CURRENT (A) EFFICIENCY (%)

10 1

35 40

45 50

55 60

65 70

75 80

85 90

95 100

30 0.1

100 VOUT1 = 1.2V VOUT1 = 3.3V VIN = VCC = 5V LOAD CURRENT (A) OUTPUT VOLTAGE CHANGE vs. LOAD CURRENT . MAX15023 toc03 LO OUTPUT VOLTAGE CHANGE (%)

10 8

6 4

2 99.2 99.4 99.6 99.8 100.0 100.2 100.4 100.6 100.8 101.0 99.0

0 12 OUT1 VCC VOLTAGE vs. LOAD CURRENT MAX15023 toc04 LOAD CURRENT (mA) SUPPLY VOLTAGE (V)

135 120

15 30

45 75

90 60

105 5.05 5.10 5.15 5.20 5.25 5.30 5.35 5.40 5.00

0 150 VCC VOLTAGE vs. IN VOLTAGE MAX15023 toc05 IN VOLTAGE(V) V CC VOLTAGE (V)

24 20

16 12

8 4.15 4.30 4.45 4.60 4.75 4.90 5.05 5.20 5.35 5.50 4.00

4 28 ILOAD = 5mA ILOAD = 50mA VCC VOLTAGE vs. TEMPERATURE MAX15023 toc06 TEMPERATURE (°C) SUPPLY VOLTAGE (V)

30 35

10 -15 5.05 5.10 5.15 5.20 5.25 5.30 5.35 5.40 5.45 5.50 5.00 -40

85 ILOAD = 5mA SWITCHING FREQUENCY vs. RT MAX15023 toc07 RT (k?) SWITCHING FREQUENCY (kHz)

80 70

50 60

30 40

20 200

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500 600

700 800

900 1000

1100 1200

1300 100

10 90 SWITCHING FREQUENCY vs. TEMPERATURE MAX15023 toc08 TEMPERATURE (?C) SWITCHING FREQUENCY (kHz)

60 35

10 -15

250 300

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450 500

550 600

650 700

750 800

200 -40

85 RT = 22.1k? RT = 33.2k? RT = 66.5k? IIN CURRENT vs. SWITCHING FREQUENCY MAX15023 toc09 SWITCHING FREQUENCY (kHz) I IN CURRENT (mA)

900 800

700 600

500 400

300 30

60 90

120 150

180 210

0 200

1000 VIN = 12V CDL = CDH = 10nF CDL = CDH = 4.7nF CDL = CDH = 1nF CDL = CDH = 0nF (Supply = IN = 12V, unless otherwise noted. See Typical Application Circuit of Figure 6.) ??5 典型工作特性 (Supply = IN = 12V, unless otherwise noted. See Typical Application Circuit of Figure 6.) LOAD TRANSIENT ON OUT2 MAX15023 toc16 10?s/div VOUT2 (AC-COUPLED) 200mV/div VOUT1 (AC-COUPLED) 100mV/div IOUT2 2A/div LOAD TRANSIENT ON OUT1 MAX15023 toc15 10?s/div VOUT1 (AC-COUPLED) 100mV/div VOUT2 (AC-COUPLED) 50mV/div IOUT1 5A/div MAX15023 toc14 RLIM (k?) CURRENT-LIMIT THRESHOLD (mV)

55 50

40 45

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35 10

30 60

90 120

150 180

210 240

270 300

0 5

60 SOURCE CURRENT LIMIT SINK CURRENT LIMIT CURRENT-LIMIT THRESHOLD vs. RLIM SHUTDOWN CURRENT vs. TEMPERATURE MAX15023 toc13 TEMPERATURE (?C) SHUTDOWN CURRENT ( ? A)

60 35

10 -15

205 210

215 220

225 230

200 -40

85 LIM_ CURRENT vs. TEMPERATURE MAX15023 toc12 TEMPERATURE (C) LIM_ CURRENT (........