Related Parts .................................................. 92
For more information
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3
Rev. E
LTC2977
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
PIN CONFIGURATION
64 V
SENSEP6
63 V
SENSEM5
62 V
SENSEP5
61 V
DACM7
60 V
DACP7
59 V
DACP6
58 V
DACM6
57 V
DACM5
56 V
DACP5
55 V
DACP4
54 V
DACM4
53 V
SENSEM4
52 V
SENSEP4
51 V
DACM3
50 V
DACP3
49 V
SENSEM3
V
SENSEM6
1
V
SENSEP7
2
V
SENSEM7
3
V
OUT_EN0
4
V
OUT_EN1
5
V
OUT_EN2
6
V
OUT_EN3
7
V
OUT_EN4
8
V
OUT_EN5
9
V
OUT_EN6
10
V
OUT_EN7
11
V
IN_EN
12
DNC 13
V
IN_SNS
14
V
PWR
15
V
DD33
16
65
GND
48 V
SENSEP3
47 V
SENSEM2
46 V
SENSEP2
45 V
DACM2
44 V
DACP2
43 V
SENSEM1
42 V
SENSEP1
41 V
DACM1
40 V
DACP1
39 V
DACP0
38 V
DACM0
37 V
SENSEM0
36 V
SENSEP0
35 REFM
34 REFP
33 ASEL1
UP PACKAGE
64-LEAD (9mm
×
9mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA-TOP
= 28°C/W,
θ
JC-BOTTOM
= 1°C/W
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
Supply Voltages:
V
PWR
...................................................... –0.3V to 15V
V
DD33
.................................................... –0.3V to 3.6V
V
DD25
.................................................. –0.3V to 2.75V
Digital Input/Output Voltages:
ALERTB, SDA, SCL, CONTROL0,
CONTROL1............................................ –0.3V to 5.5V
PWRGD, SHARE_CLK,
WDI/RESETB, WP ....................–0.3V to V
DD33
+ 0.3V
FAULTB00, FAULTB01, FAULTB10,
FAULTB11 ................................–0.3V to V
DD33
+ 0.3V
ASEL0, ASEL1 ..........................–0.3V to V
DD33
+ 0.3V
Analog Voltages:
REFP ................................................... –0.3V to 1.35V
REFM .................................................... –0.3V to 0.3V
V
IN_SNS
.................................................. –0.3V to 15V
V
SENSEP[7:0]
............................................. –0.3V to 6V
V
SENSEM[7:0]
............................................. –0.3V to 6V
V
OUT_EN[3:0]
, V
IN_EN
............................... –0.3V to 15V
V
OUT_EN[7:4]
............................................. –0.3V to 6V
V
DACP[7:0]
................................................. –0.3V to 6V
V
DACM[7:0]
............................................. –0.3V to 0.3V
Operating Junction Temperature Range:
LTC2977C ................................................ 0°C to 70°C
LTC2977I ........................................... –40°C to 105°C
Storage Temperature Range ................ –65°C to 150°C*
Maximum Junction Temperature ........................ 125°C*
*See Operation section for detailed EEPROM de-rating
information for junction temperatures in excess of 105°C.
ORDER INFORMATION
LEAD FREE FINISH
LTC2977CUP#PBF
LTC2977IUP#PBF
LTC2977IUP#WPBF
TAPE AND REEL
LTC2977CUP#TRPBF
LTC2977IUP#TRPBF
LTC2977IUP#WTRPBF
PART MARKING*
LTC2977UP
LTC2977UP
LTC2977UP
PACKAGE DESCRIPTION
64-Pin (9mm × 9mm) Plastic QFN
64-Pin (9mm × 9mm) Plastic QFN
64-Pin (9mm × 9mm) Plastic QFN
JUNCTION TEMPERATURE RANGE
0°C to 70°C
–40°C to 105°C
–40°C to 105°C
AUTOMOTIVE PRODUCTS**
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions
of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
V
DD33
17
V
DD25
18
WP 19
PWRGD 20
SHARE_CLK 21
WDI/RESETB 22
FAULTB00 23
FAULTB01 24
FAULTB10 25
FAULTB11 26
SDA 27
SCL 28
ALERTB 29
CONTROL0 30
CONTROL1 31
ASEL0 32
4
Rev. E
For more information
www.analog.com
LTC2977
ELECTRICAL CHARACTERISTICS
SYMBOL
V
PWR
I
PWR
I
VDD33
V
UVLO_VDD33
PARAMETER
V
PWR
Supply Input Operating Range
V
PWR
Supply Current
V
DD33
Supply Current
V
DD33
Undervoltage Lockout
V
DD33
Undervoltage Lockout
Hysteresis
V
DD33
Supply Input Operating Range
Regulator Output Voltage
V
DD25
t
INIT
Regulator Output Voltage
Initialization Time
V
PWR
= V
DD33
4.5V ≤ V
PWR
≤ 15V
3.13V ≤ V
DD33
≤ 3.47V
Time from V
IN
Applied Until the
TON_DELAY Timer Starts
V
REF
= V
REFP
– V
REFM
, 0 < I
REFP
< 100µA
(Note 4)
Differential Voltage:
V
IN_ADC
= (V
SENSEPn
– V
SENSEMn
)
Single-Ended Voltage: V
SENSEMn
Current Sense Input Range (Odd
Numbered Channels Only)
N_ADC
Voltage Sense Resolution Uses L16
Format
Current Sense Resolution (Odd
Numbered Channels Only)
Single-Ended Voltage: V
SENSEPn
, V
SENSEMn
Differential Voltage: V
IN_ADC
0V ≤ V
IN_ADC
≤ 6V
Mfr_config_adc_hires = 0
0mV ≤ |V
IN_ADC
| < 16mV (Note 12)
16mV ≤ |V
IN_ADC
| < 32mV
32mV ≤ |V
IN_ADC
| < 63.9mV
63.9mV ≤ |V
IN_ADC
| < 127.9mV
127.9mV ≤ |V
IN_ADC
|
Mfr_config_adc_hires = 1
Voltage Sense Mode V
IN_ADC
≥ 1V
Voltage Sense Mode 0 ≤ V
IN_ADC
≤ 1V
TUE_ADC_
CURR_SNS
Total Unadjusted Error (Note 3)
Current Sense Mode, Odd Numbered
Channels Only, 20mV ≤ V
IN_ADC
≤ 170mV
Current Sense Mode, Odd Numbered
Channels Only, V
IN_ADC
≤ 20mV
V
OS_ADC
t
CONV_ADC
Offset Error
Conversion Time
Current Sense Mode, Odd Numbered
Channels Only
Voltage Sense Mode (Note 5)
Current Sense Mode (Note 5)
Temperature Input (Note 5)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
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