MC33341DG ON Semiconductor, MC33341DG Datasheet - Page 9

• Manufacturer Part Number: MC33341DG
• Description: IC CTRLR BATTERY PS REG 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of MC33341DG

• Function: Charge Management
• Battery Type: All Battery Types
• Voltage - Supply: 2.3 V ~ 16 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Output Current: 50 mA
• Operating Supply Voltage: 2.3 V to 15 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The above figure shows the MC33341 configured for source return low−side current sensing allowing a common power path between
Source + and Load +. This configuration is especially suited for negative output applications where a common ground path, Source + to
Load +, is desired. The Inverting Amplifier inputs, Pins 1 and 4, are used to sense the load induced voltage drop that appears across resistor
R
is required in applications where high peak levels of inrush current are possible. The resistor value should be chosen to limit the negative
substrate current to less than 20 mA. Excessively large values for R3 will degrade the current sensing accuracy.
S
. The internal voltage and current regulation thresholds are selected by the respective external connections of Pins 2 and 6. Resistor R3
Source
Source
Return
Isolator
Opto
V reg + V
+ 1.2 R2
th(V)
R1
R2
R1
) 1
) 1
Figure 16. Source Return Low−Side Current Sensing with
1.2 V
Internally Fixed Current and Voltage Thresholds
8
1
R3
R
R
R
Differential Amp
Disable Logic
Differential Amp
Inverting Amp
R
R
R
http://onsemi.com
V
V
0.4 V
CC
7
2
CC
MC33341
I reg +
V
V
CC
CC
9
+ –0.2
1.2 V
R
V
V
I
S
R
sen
V
sen
I
th(I LS–)
th
th
0.2 V
S
V
R
CC
S
V
I
6
3
Transconductance
V
V
Comp
CC
CC
0.2 V 0.4 V 1.2 V
Amp
Reference
V
CC
V
CC
R3 +
5
4
R2
I
pk
R
0.02
S
R1
– 0.6
Load
Load
Battery or
Resistive
Load