DS2784G+ Maxim Integrated Products, DS2784G+ Datasheet - Page 14

• Manufacturer Part Number: DS2784G+
• Description: IC FUEL GAUGE STND-ALONE 14-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2784G+

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 4.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN
• Product: Fuel Gauges
• Operating Supply Voltage: 2.5 V to 4.6 V
• Supply Current: 85 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: Yes
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes
• Uvlo Start Threshold: 2.4 V
• Uvlo Stop Threshold: 2.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

discharge FETs. . If the device does not enter sleep mode for an UV condition (UVEN=0) then the FETs will turn
on once V
Overcurrent, Charge Direction (COC). Charge current develops a negative voltage on V
V
DS2784 shuts off both external FETs and sets the COC flag in the protection register. The charge current path is
not re-established until the voltage on the PLS pin drops below V
(I
Overcurrent, Discharge Direction (DOC). Discharge current develops a positive voltage on V
V
the external discharge FET and sets the DOC flag in the protection register. The discharge current path is not re-
established until the voltage on PLS rises above V
PLS to pull PLS up in order to detect the removal of the offending low-impedance load.
Short Circuit. If V
DS2784 shuts off the external discharge FET and sets the DOC flag in the protection register. The discharge
current path is not re-established until the voltage on PLS rises above V
current of value (I
Figure 2. Li+ Protection Circuitry Example Waveforms
TST
SNS
SS
. If V
) from PLS to V
is less than the charge overcurrent threshold (V
SNS
IN
exceeds the discharge overcurrent threshold (V
> V
UV
TST
.
SNS
SS
) from V
to pull PLS down in order to detect the removal of the offending charge current source.
exceeds short-circuit threshold V
DD
to PLS to pull PLS up in order to detect the removal of the short circuit.
DD
14 of 43
- V
COC
SC
TP
) for a period longer than overcurrent delay (t
. The DS2784 provides a test current (I
DOC
for a period longer than short-circuit delay (t
) for a period longer than t
DD
- V
TP
. The DS2784 provides a pulldown current
DD
- V
TP
. The DS2784 provides a test
OCD
SNS
, the DS2784 shuts off
with respect to V
SNS
TST
with respect to
) from V
OCD
SCD
), the
), the
DD
SS
. If
to