MIC79110_07 Datasheet, PDF (3/14 Pages) Micrel Semiconductor – Simple 1.2A Linear Li-Ion Battery Charger

Micrel, Inc.
MIC79110
Absolute Maximum Ratings⁽¹⁾
Input Supply Voltage (V_IN).................................... 0V to 18V
Shutdown Input Voltage (V) ................................. 0V to 10V
Output Voltage (ADJ) .....................................................10V
Power Dissipation ...................................Internally Limited
Junction Temperature ...............................–40°C to +125°C
Operating Ratings⁽²⁾
Input Supply Voltage ........................................ 2.5V to 16V
Shutdown Input Voltage (V) ................................... 0V to 7V
Output Voltage (ADJ) ....................................................9.6V
Junction Temperature Range (T_J)............. –40°C to +125°C
θ_JA (MLF-10) .......................................................... 60°C
θ_JC (MLF-10) ............................................................ 2°C
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_OUT + 1V; I_LOAD = 100µA; C_BATT = 10µF; SD = 0V; R_SET=1kΩ. Bold values indicate –40ºC < T_J < +125°C; unless
otherwise specified.
Parameter
Output Voltage Accuracy
ADJ Pin Voltage Accuracy
Line Regulation
Load Regulation
Dropout Voltage(3)
Ground Current
V_IN Pin Current
Shutdown Pin Current
Shutdown Input Threshold
Condition
Variation from V_OUT = 4.2V; T_J = –5°C to +60°C; I_LOAD = 50mA
V_IN = V_OUT + 1V to 16V @ I_LOAD = 50mA
I_LOAD = 0.1mA to 1A
I_LOAD = 100mA, R_SET = 167Ω
I_LOAD = 700mA, R_SET = 167Ω
I_LOAD = 10mA, R_SET = 167Ω
I_LOAD = 700mA, R_SET = 167Ω
SD = V_IN
SD = 5.2V, V_BAT = 0
Logic High, regulator off
Logic Low, regulator on
Min Typ Max Units
-0.75
-1.5
+0.75
%
+1.5
%
0.5955 0.6 0.6045
V
-0.1
+0.1
%/V
0.3
%
160
250
mV
375
550
mV
2
3
mA
24
35
mA
120
300
µA
0.1
5
µA
1.1
V
0.9
V
Shutdown Hysteresis
Current Limit Accuracy^{(4, 5)}
Current Limit Setpoint
Range⁽⁵⁾
Maximum Current Limit
V_BAT Reverse Current
V_OUT = 0.9 × V_NOM; I_OUT = 1.2A,
R_SET = 167Ω, T_J = –40°C to +85°C
V_OUT = 0.9 × V_NOM; I_OUT = 0.1A,
R_SET = 2kΩ
R_SET shorted to ground, V_BAT = 0.9 × V_NOM
V_IN = High impedance or ground
60
mV
-5
+5
%
-20
+20
%
0.1
1.2
A
1.25 1.65
2.5
A
4.2
20
µA
Digital End–of–Charge (D_EOC) Output
I_EOC ^{(6, 7)}
R_EOC = 4kΩ Current Falling
I_EOC ^{(6, 7)}
R_EOC = 4kΩ Current Rising
D_EOC Logic–Low Voltage
D_EOC Leakage Current
D_EOC On Resistance
R_EOC Maximum Current Limit
I_DEOC = 5mA, I_BAT = 700mA
Logic High = V_IN = 16V
V_IN = +5V
R_EOC shorted to ground
Analog Charge Indicator (A_CHG) Output
I_SOURCE(8)
I_BAT = 50mA
I_BAT = 1.2A, T_J = –40°C to +85°C
35
50
65
mA
30
70
mA
50
70
95
mA
40
100
mA
0.74 0.95
V
0.1
µA
150
190
Ω
0.5
1.0
2.0
mA
37
46
55
µA
800
950 1150
µA
October 2007
3
M9999-102507