LTC2977 datasheet(10/138 Pages) AD

10 / 138 page

LTM4664A

Rev. 0

For more information www.analog.com

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VUV-RNG

Output UV Comparator

Threshold Detection Range

(Note 10) Limit Design to 1.5V Operating for Module

Low Range Scale, MFR_PWM_MODEn[1] = 1b

High Range Scale, MFR_PWM_MODEn[1] = 0b

0.5

2.7

3.6

VUV-ACC Cn

Output UV Threshold Accuracy

Range Low

Range High

(Notes 9, 10)

0.5V ≤ VVOSNS+_Cn – VVOSNS–_Cn ≤ 2.7V, MFR_PWM_

MODEn[1] = 1b

1V ≤ VVOSNS+_Cn – VVOSNS–_Cn ≤ 3.6V, MFR_PWM_

MODEn[1] = 0b

±1.5

±40

tPROP-OV

Output OV Comparator

Response Times

Overdrive to 10% Above Programmed Threshold

100

µs

tPROP-UV

Output UV Comparator

Response Times

Underdrive to 10% Below Programmed Threshold

100

µs

Analog OV/UV VINS3 Input Voltage Supervisor Comparators (Threshold Detectors for VIN_ON and VIN_OFF)

NVINS3-OV/UV-COMP VINS3 OV/UV Comparator

Threshold-Programming Resolution

(Notes 9, 10)

Bits

VINS3-OU-RANGE

VINS3 OV/UV Comparator

Threshold-Programming Range

ABS MAX = 18V for Module Design

4.5

VINS3-OU-STP

VINS3 OV/UV Comparator

Threshold-Programming

LSB Step Size

(Note 10)

VINS3-OU-ACC

VINS3 OV/UV Comparator

Threshold Accuracy

4.5V < VINS3 ≤ 16V, Operating Range, 16V Max for

Module

±350

tPROP-VINS3-LOW-VIN VINS3 OV/UV Comparator

Response Time, High VIN

Operating Configuration

Test Circuit 1, and:

VIN_ON = 9V; VINS3 Driven from 8.775V to 9.225V

VIN_OFF = 9V; VINS3 Driven from 9.225V to 8.775V

100

µs

tPROP-VINS3-LOW-VIN VINS3 OV/UV Comparator

Response Time, Low VIN

Operating Configuration

Test Circuit 2, and:

VIN_ON = 4.5V; VINS3 Driven from 4.225V to 4.725V

VIN_OFF = 4.5V; VINS3 Driven from 4.725V to 4.225V

100

µs

Input Voltage (VINS3) Readback (READ_VIN)

NVINS3-RB

Input Voltage Readback

Resolution and LSB Step Size

(Notes 5, 10)

15.625

Bits

VINS3-F/S

Input Voltage Full-Scale

Digitizable Range

(Notes 7, 11) 18V for Module Design

VINS3-RB-ACC

Input Voltage Readback Accuracy

READ_VIN, 4.5V ≤ VINS3 ≤ 16V, (VIN = VINS3)

tCONVERT-VINS3-RB Input Voltage Readback

Update Rate

MFR_ADC_CONTROL = 0.00 (Notes 10, 12)

MFR_ADC_CONTROL = 0.01 (Notes 10, 12)

Channels 0 and 1 Output Voltage Readback (READ_VOUTn)

NVO-RB

Output Voltage Readback

Resolution and LSB Step Size

(Note 10)

244

Bits

µV

VO-F/S

Output Voltage Full-Scale

Digitizable Range

VRUNn = 0V (Note 10)

Design Limited to 1.5V

VO-RB-AC-Cn

Output Voltage Readback Accuracy

0.5V ≤ VVOSNS+_Cn – VVOSNS– _Cn ≤ 1.0V

1V ≤ VVOSNS+_Cn – VVOSNS – _Cn ≤ 3.6V

Within ± 5mV, Reading

Within ± 0.5%, Reading

Channels 0 and 1 Output Current (READ_IOUTn)

NIO-RB

Output Current Readback

Resolution and LSB Step Size

(Notes 5, 10) Based on MFR_PWM_MODE[7] = 1

Using the OUT_OC_FAULT_LIMIT of 34A

34.1

Bits

IO-F/S

Output Current Full-Scale Digitizable

Range

(Notes 5, 10) Based on MFR_PWM_MODE[7] = 1

Using the IOUT_OC_FAULT_LIMIT of 40A

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the specified internal

operating temperature range (Note 1, 2, 3). Specified as each individual output channel designated with n (Note 3). TA = 25°C,

VINS3 = 12V, RUN_Cn = 3.3V, EXTVCC = 0V, FREQUENCY_SWITCH = 350kHz and VOUTCn commanded to 1.000V unless otherwise noted.

Configured with factory default EEPROM settings, unless otherwise noted.

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