MAX8595XETA-T 查看數據表（PDF） - Maxim Integrated

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MAX8595XETA-T

High-Efficiency, 36V Step-Up Converters with TA Derating Option for 2 to 9 White LEDs

Maxim Integrated 

High-Efficiency, 36V Step-Up Converters

with TA Derating Option for 2 to 9 White LEDs

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 3.0V, L = 22µH, CIN = 2.2µF, COUT = 0.1µF, CCOMP = 0.1µF, RSENSE = 13Ω, VCTRL = 1.5V, TA = -40°C to +85°C, unless other-

wise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

CS Derating Function Slope

CTRL Input Resistance

CTRL Dual-Mode Threshold

CONDITIONS

MAX8596X, VCTRL = 3.0V, TA = +42°C to +85°C

VCTRL < 1.5V

MIN TYP MAX UNITS

-5.5

mV/°C

250

500

780

kΩ

100

170

240

mV

CTRL Dual-Mode Hysteresis

5

mV

CTRL Shutdown Enable Delay

(Note 3)

6.0

8.2

10.5

ms

CS to COMP Transconductance VCOMP = 1.5V

32

50

82

µS

COMP Input Resistance to

Ground

In shutdown, UVLO or OVLO

20

kΩ

OSCILLATOR

Operating Frequency

0.75

1.0

1.25 MHz

Minimum Duty Cycle

PWM mode

Pulse skipping

12

%

0

Maximum Duty Cycle

CTRL = IN, CS = GND

94

95

%

n-CHANNEL SWITCH

LX On-Resistance

LX Leakage Current

LX Current Limit

ILX = 190mA

VLX = 36V, CTRL = GND

Duty cycle = 90%

TA = +25°C

TA = +85°C

0.8

1.35

Ω

0.01

5

µA

1

500

700

900

mA

Note 1: Parameters are 100% production tested at TA = +25°C. Limits over the operating temperature range are regulated by

design and characterization.

Note 2: VD is the forward-voltage drop of the Schottky diode in Figure 1.

Note 3: Time from CTRL going below the Dual-Mode threshold to IC shutdown.

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