MAX5094A Просмотр технического описания (PDF) - Maxim Integrated

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MAX5094A

High-Performance, Single-Ended, Current-Mode PWM Controllers

Maxim Integrated 

High-Performance, Single-Ended, Current-Mode

PWM Controllers

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +15V, RT = 10kΩ, CT = 3.3nF, REF = open, CREF = 0.1µF, COMP = open, VFB = 2V, CS = GND, TA = TJ = -40°C to +85°C,

unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MAX5094A/B (Note 3)

Maximum Current-Sense Signal

Power-Supply Rejection Ratio

Input Bias Current

VCS_MAX

PSRR

ICS

MAX5094C/MAX5094D (Note 3)

VCOMP = 5V, MAX5095

12V ≤ VCC ≤ 25V

VCOMP = 0V

Delay From CS to OUT

tCS_DELAY 50mV overdrive

MOSFET DRIVER

OUT Low-Side On-Resistance

VRDS_ONL ISINK = 200mA

OUT High-Side On-Resistance

VRDS_ONH

ISOURCE (Peak)

ISOURCE

ISINK (Peak)

ISINK

Rise Time

tR

Fall Time

tF

UNDERVOLTAGE LOCKOUT/STARTUP

ISOURCE = 100mA

COUT = 10nF

COUT = 10nF

COUT = 1nF

COUT = 1nF

Startup Voltage Threshold

Minimum Operating Voltage After

Turn-On

VCC_START

VCC_MIN

Undervoltage-Lockout Hysteresis

PWM

UVLOHYST

Maximum Duty Cycle

DMAX

MAX5094A/MAX5094C/MAX5095A

MAX5094B/MAX5094D/MAX5095B/

MAX5095C

Minimum Duty Cycle

SUPPLY CURRENT

DMIN

Startup Supply Current

Operating Supply Current

Zener Bias Voltage at VCC

THERMAL SHUTDOWN

ISTART

ICC

VZ

VCC = 7.5V

VFB = VCS = 0V

ICC = 25mA

Thermal Shutdown

TSHDN Junction temperature rising

Thermal Shutdown Hysteresis

THYST

SYNCHRONIZATION (MAX5095A/MAX5095B Only) (Note 5)

SYNC Frequency Range

SYNC Clock Input High

Threshold

fSYNC

VSYNCINH

SYNC Clock Input Low Threshold

SYNC Clock Input Minimum

Pulse Width

VSYNCINL

tPW_SYNCIN

SYNC Clock Output High Level

SYNC Clock Output Low Level

SYNC Leakage Current

VSYNCOH

VSYNCOL

ISYNC

1mA external pulldown

RSYNC = 5kΩ

VSYNC = 0V

MIN

0.95

0.275

0.275

TYP

1

0.3

0.3

70

-1

60

MAX

1.05

0.325

0.325

-2.5

UNITS

V

dB

µA

ns

4.5

10

Ω

3.5

7

Ω

2

A

1

A

15

ns

22

ns

7.98 8.40 8.82

V

7.1

7.6

8.0

V

0.8

V

94.5

96

97.5

%

48

49.8

50

0

%

32

65

µA

3

5

mA

24

26.5

V

150

°C

4

°C

20

1000 kHz

3.5

V

0.8

V

200

ns

4.0

4.7

V

0

0.1

V

0.01 0.1

µA

_______________________________________________________________________________________ 3

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