Data Sheet

LT4322

analog.com

Rev. 0

3 of 29

SPECIFICATIONS

Table 1. Electrical Characteristics

(TJ= -40°C to +150°C for the minimum and maximum values. TJA = 25°C for the typical values. VCATHODE = VVDDC =

VVDDA = 12V, VVSSA = VANODE= 0V unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

VDDC Input Supply

Operating Voltage Range

(VDDC to VSSA) 2 3

VVDDC

9.5

12

60

V

VDDA Operating Voltage

Range 4

VVDDA

9

12

14

V

Input Supply

Undervoltage Lockout

VVDDA(UVL)

VDDC Rising; measured at VDDA

4.4

V

VDDA Regulation Voltage

VVDDA

VDDC = 24V, CVDDA = 1µF

11

12.35

14

V

VDDA Regulation

Hysteresis Voltage

VVDDA,HYST

VDDC = 24V, CVDDA = 1µF

-0.6

V

VDDA Drop-Out Voltage,

(VDDC – VDDA)

VDO

VDDC = CATHODE = 11V

120

400

mV

VDDA Input Supply

Current

IVDDA(IN)

Forward Bias,

CATHODE = VDDC= -100mV

2.2

4.4

mA

Reverse Bias,

CATHODE = VDDC = 2V

1.2

2.4

VDDA Output Start-up

Current

ISTART

VDDA = 0V, VDDC = 24V

-3

-12

-50

mA

VDDA Output Refresh

Current

IGULP

VDDA = 10V, VDDC = 24V

-10

-40

-85

mA

CATHODE Input Bias

Current

ICATHODE

Forward Bias,

CATHODE = -25mV

0

-3

-10

µA

Reverse Bias,

CATHODE = 60V

5

20

50

ANODE Input Bias

Current

IANODE

CATHODE = -25mV

0

-3

-10

µA

ANODE–CATHODE

Regulation Voltage

ΔVSD

GATE = 4V

15

25

35

mV

GATE Drive Output High

Voltage (GATE-ANODE)

ΔVGATE(H)

CATHODE = -0.2V, IGATE = -1mA

11.5

11.88

14

V