MIC79110 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – Simple 1.2A Linear Li-Ion Battery Charger

MIC79110
Micrel
Absolute Maximum Ratings (1)
Operating Ratings (2)
Input Supply Voltage (V_IN) .................................. 0V to 18V
Shutdown Input Voltage (V) ................................ 0V to 18V
Output Voltage (ADJ) .................................................... 10V
Power Dissipation .................................... Internally Limited
Junction Temperature .............................. –40°C to +125°C
Electrical Characteristics
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
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
Condition
Min Typ Max Unit
Output Voltage Accuracy
Variation from V_OUT = 4.2V; T_J = –5°C to +60°C; I_Load = 50mA –0.75
–1.5
+0.75 %
+1.5
%
ADJ Pin Voltage Accuracy
0.5955 0.6 0.6045 V
Line Regulation
Load Regulation
Dropout Voltage⁽³⁾
Ground Current
V_IN Pin Current
Shutdown Pin Current
Shutdown Input Threshold
V_IN = Vout + 1V to 16V @ I_LOAD = 50mA
I_LOAD = 0.1mA to 1A
I_LOAD = 100mA, Rset = 167Ω
I_LOAD = 700mA, Rset = 167Ω
I_LOAD = 10mA, Rset = 167Ω
I_LOAD = 700mA, Rset = 167Ω
SD = V_IN
SD = 5.2V, V_BAT = 0
Logic High, regulator off
–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
Logic Low, regulator on
0.9
V
Shutdown Hysteresis
Current Limit Accuracy^{(4, 5)}
Current Limit Setpoint Range⁽⁵⁾
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
60
mV
–5
+5
%
–20
+20
%
0.1
1.2
A
Maximum Current Limit
R_SET shorted to ground, V_BAT = 0.9 × V_NOM
V_BAT Reverse Current
V_IN = High impedance or ground
Digital End–of–Charge (D_EOC) Output
I_EOC ^{(6, 7)}
R_EOC = 4kW Current Falling
I_EOC ^{(6, 7)}
R_EOC = 4kW Current Rising
1.25 1.65 2.5
A
4.2
20
µA
35
50
65
mA
30
70
mA
50
70
95
mA
40
100 mA
D_EOC Logic–Low Voltage
I_DEOC = 5mA, I_BAT = 700mA
D_EOC Leakage Current
Logic High = V_IN = 16V
D_EOC On Resistance
V_IN = +5V
R_EOC Maximum Current Limit
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
0.74 0.95
V
0.1
µA
150 190
Ω
0.5
1.0
2.0
mA
45
46
55
µA
800 950 1150 µA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
July 2004
3
M9999-072004