MIC2873 Datasheet, PDF (3/24 Pages) Micrel Semiconductor – 1.2A High-Brightness Flash LED Driver with Single-Wire Serial Interface

Micrel, Inc.
MIC2873
Absolute Maximum Ratings⁽²⁾
Input Voltage (V_IN) ........................................ −0.3V to +6.0V
General I/O Voltage (V_FEN) ................................ −0.3V to V_IN
V_OUT and V_LED Voltage.................................. −0.3V to +6.0V
Single-Wire I/O Voltage (V_DC) ........................... −0.3V to V_IN
V_SW Voltage .................................................. −0.3V to +6.0V
Lead Temperature (soldering, 10s).......................... +260°C
Junction Temperature (T_J) ........................ −40°C to +150°C
Storage Temperature (T_s) ......................... −40°C to +150°C
ESD Rating⁽⁵⁾
HBM ......................................................................... 2kV
MM .........................................................................200V
Operating Ratings⁽³⁾
Input Voltage (V_IN) .......................................... 2.7V to +5.5V
Enable Input Voltage (V_FEN) ................................... 0V to V_IN
Single-Wire I/O Voltage (V_DC) ................................ 0V to V_IN
Junction Temperature (T_J) ........................ −40°C to +125°C
Operating Ambient Temperature (T_A) ......... −40°C to +85°C
Package Thermal Resistance
1.30mm x 1.30mm WLCSP (θ_JA)⁽⁴⁾ ....................84°C/W
Power Dissipation (P_D) ........................... Internally Limited⁽⁴⁾
Electrical Characteristics⁽⁶⁾
VIN = 3.6V; L = 1µH; COUT =4.7µF, IOUT = 100mA, TA = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless otherwise noted.
Symbol Parameter
Condition
Min.
Typ. Max. Units
Power Supply
VIN
VUVLO
Supply Voltage Range
UVLO Threshold (rising)
UVLO Hysteresis
2.7
5.5
V
2.41
2.53 2.68
V
180
mV
ISTB
Standby Current
VDC = 3.6V, VFEN = 0V, boost regulator and LED
current driver both OFF.
140
170 205
µA
ISD
DMAX
DMIN
ISW
PMOS
NMOS
ISW_LK
FSW
Shutdown Current
Maximum Duty Cycle
Minimum Duty Cycle
Switch Current Limit
Switch On-Resistance
Switch Leakage Current
Oscillator Frequency
VDC = 0V
VIN = VOUT = 2.7V
ISW = 100mA
ISW = 100mA
VDC = 0V, VSW = 5.5V
1
2
µA
82
86
90
%
6.4
%
4.1
A
125
mΩ
0.01
1
µA
1.8
2
2.2
MHz
Notes:
2. Exceeding the absolute maximum rating may damage the device.
3. The device is not guaranteed to function outside its operating rating.
4. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA.
Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
5. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
6. Specification for packaged product only.
July 17, 2014
3
Revision 1.0