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BQ77PL900DL Datasheet

  • BQ77PL900DL

  • Texas Instruments [Five to Ten Series Cell Lithium-Ion or L...

  • TI

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bq77PL900
www.ti.com
......................................................................................................................................................................................................
SLUS844 鈥?JUNE 2008
Table 2. Host Control Summary
MODE TRANSITION
Normal to current protection
Current protection to normal
FUNCTION AND FIRMWARE PROCEDURE
Vsr > Voc or Vsc for period of toc or tsc
Automatically, DSG and CHG turn off, SCD or OCD status changes = 1, XALERT = L
1. Send commands to transition LTCLR from 0 to 1 to 0
2. Read status bit. XALERT would change to H.
3. Set CHG and DSG FET ON to enable normal operation
Normal to overvoltage protection
Overvoltage protection to normal
Vcell > Vov for period of tov
Automatically, CHG turns off, UV status changes = 1, XALERT = L
1. Confirm the OVP protection status is cleared
2. Send command LTCLR from 1 to 0
3. Read status bit. XALERT changes to H.
4. Set CHG FET ON to enable normal operation
UVFET_DIS = 0
Normal to undervoltage
protection
Undervoltage protection
to normal
UVFET_DIS = X
UVFET_DIS = 1
Vcell < Vuv for period of tuv
Automatically, DSG turns off, UV status changes = 1, XALERT = L
1. Vcell < Vuv or for period of tuv, UV status changes = 1, XALERT = L
2. Send commands to turn off DSG.
1. Confirm the OVP protection status is cleared
2. Send command LTCLR from 1 to 0
3. Set DSG FET ON to enable normal operation
4. Read status bit. XALERT changes to H.
Normal to overtemperature
1. Send commands to turn on TOUT
2. If TIN voltage < 0.975 V, DSG and CHG turn off, OVTEMP status changes = 1,
XALERT = L
Overtemperature to normal
1. Send commands to turn on TOUT (To return to normal mode, bq77PL900 must
acknowledge Vth > 1.075 V )
2. Send commands to transition LTCLR from 1 to 0
3. Set CHG and DSG FET ON
4. Read status bit. XALERT changes to H.
Any mode to shutdown
1. Set DSG FET OFF
2. Wait until PACK voltage decreases to 0 V
3. SET shutdown bit to 1
ORDERING INFORMATION
T
A
鈥?0擄C to 100擄C
(1)
PACKAGED
SSOP48
bq77PL900DL
(1)
The bq77PL900 can be ordered in tape and reel by adding the suffix
R to the orderable part number, I.e., bq77PL900DLR.
Copyright 漏 2008, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s):
bq77PL900
9

BQ77PL900DL 產品屬性

  • 25

  • 集成電路 (IC)

  • PMIC - 電池管理

  • -

  • 過壓/欠壓保護

  • 鋰離子（Li-Ion）、鋰聚合物（Li-Pol）

  • 7 V ~ 50 V

  • -40°C ~ 100°C

  • 表面貼裝

  • 48-BSSOP（0.295"，7.50mm 寬）

  • 48-SSOP

  • 管件

  • 296-25928-5BQ77PL900DL-ND

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