MIC79050-4.2BM TR Micrel Inc, MIC79050-4.2BM TR Datasheet - Page 3

• Manufacturer Part Number: MIC79050-4.2BM TR
• Description: IC BATTERY CHARGER LI-ION 8-SOIC
• Manufacturer: Micrel Inc
• Type: Battery Chargerr

Specifications of MIC79050-4.2BM TR

• Function: Charge Management
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 2.5 V ~ 16 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Output Current: 500mA
• Output Voltage: 4.2V
• Operating Supply Voltage (min): 2.5V
• Operating Supply Voltage (max): 16V
• Operating Temp Range: -40C to 125C
• Package Type: SOIC
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MIC79050-4.2BMTR; MIC79050-4.2BMTR

Absolute Maximum Ratings
Supply Input Voltage (V
Power Dissipation (P
Junction Temperature (T
Lead Temperature (soldering, 5 sec.) ........................ 260°C
Storage Temperature (T
Electrical Characteristics
V
Symbol
V
ΔV
ppm/°C
ΔV
ΔV
V
I
I
PSRR
I
ΔV
ENABLE Input
V
I
I
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7:
Note 8:
Note 9:
August 2005
MIC79050
GND
GND
LIMIT
ENL
ENH
IN
BAT
IN
ENL
BAT
BAT
BAT
BAT
= V
– V
/ΔT
/V
/V
/ΔP
BAT
BAT
BAT
BAT
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
The maximum allowable power dissipation at any T
maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Battery voltage temperature coefficient is the worst case voltage change divided by the total temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load
range from 100µA to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Dropout voltage is defined as the input to battery output differential at which the battery voltage drops 2% below its nominal value measured at
1V differential.
Ground pin current is the charger quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the
load current plus the ground pin current.
V
Thermal regulation is the change in battery voltage at a time “t” after a change in power dissipation is applied, excluding load or line regulation
effects. Specifications are for a 500mA load pulse at V
D
EN
+ 1.0V; C
is the voltage externally applied to devices with the EN (enable) input pin. [MSO-8(MM) and SO-8 (M) packages only.]
Parameter
Battery Voltage Accuracy
Battery Voltage
Temperature Coefficient
Line Regulation
Load Regulation
Dropout Voltage, Note 6
Ground Pin Current, Notes 7, 8
Ground Pin Quiescent Current,
Note 8
Ripple Rejection
Current Limit
Thermal Regulation
Enable Input Logic-Low Voltage
Enable Input Current
OUT
D
) ................ Internally Limited, Note 3
= 4.7µF, I
IN
S
J
) ........................ –65°C to +150°C
) ..............................–20V to +20V
) ........................ –40°C to +125°C
OUT
= 100µA; T
(Note 1)
J
= 25°C, bold values indicate –40°C ≤ T
Conditions
variation from nominal V
Note 4
V
I
I
V
V
V
V
f = 120Hz
V
Note 9
V
V
V
V
V
A
OUT
OUT
IN
EN
EN
EN
EN
BAT
EN
EN
ENL
ENL
ENH
(ambient temperature) is calculated using: P
IN
= V
≥ 3.0V, I
≥ 3.0V, I
≤ 0.4V (shutdown)
≤ 0.18V (shutdown)
= logic low (shutdown)
= logic high (enabled)
= 100µA to 500mA, Note 5
= 500mA
= 16V for t = 10ms.
≤ 0.4V (shutdown)
≤ 0.18V (shutdown)
= 0V
≥ 2.0V (enabled)
BAT
+ 1V to 16V
3
OUT
OUT
Operating Ratings
Supply Input Voltage (V
Enable Input Voltage (V
Junction Temperature (T
Package Thermal Resistance (Note 3) ................................
= 500mA
= 100µA
MSOP-8 (θ
SOIC-8(θ
SOT-223(θ
OUT
JA
–5°C to +60°C
JC
JA
) ......................................................... 63°C/W
) ...................................................... 15°C/W
) ...................................................... 80°C/W
J
≤ +125°C; unless noted.
D(max)
IN
EN
J
) ............................ +2.5V to +16V
) ........................ –40°C to +125°C
(Note 2)
) ...................................0V to V
= (T
–0.75
Min
2.0
J(max)
Typical
– T
0.009
0.05
0.05
0.10
0.05
0.01
0.01
380
750
0.4
40
85
11
75
A
5
) ÷ θ
JA
. Exceeding the
+0.75
1000
Max
0.05
0.18
500
600
130
170
900
0.1
0.5
0.7
20
25
–1
–2
20
25
3
8
Micrel, Inc.
MIC79050
Units
%/W
%/V
%/V
mV
mV
mA
mA
dB
mA
mA
µA
µA
µA
µA
µA
µA
µA
µA
%
%
%
V
V
V
IN