MC33341D ON Semiconductor, MC33341D Datasheet - Page 13

• Manufacturer Part Number: MC33341D
• Description: IC CTRLR BATTERY PS REG 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of MC33341D

• 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: Contains lead / RoHS non-compliant

The above figure shows the MC33341 configured for load low−side current sensing allowing common paths for both power and ground,
between the source and load. The Noninverting input paths, Pins 1 and 4, are used to sense the load induced voltage drop that appears
across resistor R
6. Resistor R3 is required in applications where high peak levels of load current are possible from the battery or load bypass capacitor. The
resistor value should be chosen to limit the negative substratecurrent to less than 20 mA. Excessively large values for R3 will degrade the
current sensing accuracy.
Source
Source
Return
Isolator
Opto
S
V reg + V
. The internal voltage and current regulation thresholds are selected by the respective external connections of Pins 2 and
+ 1.2 R2
th(V)
R1
R2
R1
) 1
) 1
1.2 V
Internally Fixed Current and Voltage Thresholds
Figure 20. Load Low−Side Current Sensing with
8
1
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
13
+ 0.2
1.2 V
R3
V
V
R
I
sen
V
sen
th(I LS))
S
I
th
th
0.2 V
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
5
4
R2
R3 +
I
pk
R1
R
0.02
S
– 0.6
Load
Load
R
S
Battery or
Resistive
Load