MIC4830_09 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – Low Noise 180VPP EL Driver

Micrel
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_DD)...................................... –0.5V to 6.0V
Output Voltage (V_CS) ..................................... –0.5V to 120V
EL Lamp Terminals (V_A, V_B)................................... V_CS + 3V
Switch Voltage (Vsw)…………………………..-0.5V to 120V
Frequency Control Voltage
(V_RSW, V_REL) .................................... –0.5V to (V_DD+0.3V)
Storage Temperature (T_S).........................–65°C to +150°C
ESD Rating⁽⁴⁾............................................................... 1.5kV
MIC4830
Operating Ratings⁽²⁾
Supply Voltage (V_DD).................................... +1.8V to +5.5V
Lamp Drive Frequency (f_EL) ....................... 60Hz to 1000Hz
Switching Frequency (f_SW).........................65kHz to 250kHz
Ambient Temperature (T_A) .......................... –40°C to +85°C
Package Thermal Resistance⁽³⁾
MSOP (θ_JA) ......................................................206°C/W
MLF^® (θ_JA)..........................................................63°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_DD = 3.0V, R_SW = 332KΩ, R_EL = 1.78MΩ. T_A = 25°C unless otherwise specified. Bold values indicate –40°C ≤ T_A ≤ +85°C.
Parameter
Condition
Min Typ Max Units
On-resistance
CS Voltage Variation
Enable Input Low
Voltage (turn-off)
I_SW = 100mA
V_DD = 1.8V to 5.5V
V_DD = 1.8V to 5.5V
3.8
7
Ω
76
88
99
V
0.5
V
Enable Input High
Voltage (turn-on)
V_DD = 1.8V to 5.5V
V_DD-
0.5
V
Shutdown current
Input supply current
Input current including
inductor
V_A – V_B output drive
frequency
R_SW Resistor = LOW; R_EL Resistor = LOW; V_DD = 5.5V
R_SW Resistor = HIGH;
R_EL Resistor = HIGH;
V_CS = 90V; V_A, V_B OPEN
V_IN = V_DD = 3.2V; R_SW = 290KΩ; R_EL = 1.78MΩ;
L=220µH; R_OUT = 10kΩ; Lamp = 2in²
R_EL=1.78MΩ
0.01
0.5
µA
45
75
µA
15
mA
158 200
242
Hz
Switching transistor
frequency
R_SW = 332KΩ
90
112
134
kHz
Switching transistor duty
cycle
90
%
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T_A (ambient temperature) is P_D(max) = (T_J(max) – T_A) / θ_JA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
July 2009
3
M9999-070709-C