Datasheet

NXP Semiconductors
FRDM33771BTPLEVB
Featuring the MC33771B battery cell controller IC
FRDM33771BTPLEVBUG All information provided in this document is subject to legal disclaimers. © NXP B.V. 2018. All rights reserved.
User guide Rev. 1.0 — 28 June 2018
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Table 9. Cell connector (J26)
Pin # Connection Description
J26-1
J26-2
VBAT MC33771B Power supply
J26-3
J26-4
CT_14
CB_14
Cell pin 14 input with external LPF resistor.
Cell balance driver. Terminate to cell 14 cell balance load resistor
J26-5
J26-6
CT_13
CB_14:13_C
Cell pin 13 input with external LPF resistor.
Cell balance 14:13 common. Terminate to cell 14 and 13 common pin
J26-7
J26-8
CT_12
CB_13/CB_12
Cell pin 12 input with external LPF resistor.
Cell balance driver. Terminate to cell 13 and 12 cell balance load
resistor
J26-9
J26-10
CT_11
CB_12:11_C
Cell pin 11 input with external LPF resistor.
Cell balance 12:11 common. Terminate to cell 12 and 11 common pin
J26-11
J26-12
CT_10
CB_11/CB_10
Cell pin 10 input with external LPF resistor.
Cell balance driver. Terminate to cell 11 and 10 cell balance load
resistor
J26-13
J26-14
CT_9
CB_10:9_C
Cell pin 9 input with external LPF resistor.
Cell balance 10:9 common. Terminate to cell 10 and 9 common pin
J26-15
J26-16
CT_8
CB_9/CB_8
Cell pin 8 input with external LPF resistor.
Cell balance driver. Terminate to cell 9 and 8 cell balance load resistor
J26-17
J26-18
CT_7
CB_8:7_C
Cell pin 7 input with external LPF resistor.
Cell balance 8:7 common. Terminate to cell 8 and 7 common pin
J26-19
J26-20
CT_6
CB_7/CB_6
Cell pin 6 input with external LPF resistor.
Cell balance driver. Terminate to cell 7 and 6 cell balance load resistor
J26-21
J26-22
CT_5
CB_6:5_C
Cell pin 5 input with external LPF resistor.
Cell balance 6:5 common. Terminate to cell 6 and 5 common pin
J26-23
J26-24
CT_4
CB_5/CB_4
Cell pin 4 input with external LPF resistor.
Cell balance driver. Terminate to cell 5 and 4 cell balance load resistor
J26-25
J26-26
CT_3
CB_4:3_C
Cell pin 3 input with external LPF resistor.
Cell balance 4:3 common. Terminate to cell 4 and 3 common pin
J26-27
J26-28
CT_2
CB_3/CB_2
Cell pin 2 input with external LPF resistor.
Cell balance driver. Terminate to cell 3 and 2 cell balance load resistor
J26-29
J26-30
CT_1
CB_2:1_C
Cell pin 1 input with external LPF resistor.
Cell balance 2:1 common. Terminate to cell 2 and 1 common pin
J26-31 ISENSE_+ Current measurement input+ with external filter RC
J26-32 ISENSE_– Current measurement input– with external filter RC
J26-33 CT_REF
CB_1
Cell pin REF input with external LPF resistor.
Cell balance driver. Terminate to cell 1 cell balance load resistor.
J26-34 GND Negative_Battery
4.9 External EEPROM
The FRDM33771BTPLEVB has an integrated gateway communication link to an external
local EEPROM. The MC33771B's I
2
C Communication Interface manages communication
with the EEPROM.