MIC4832 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – Low Noise 220Vp-p 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
MIC4832
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 (θJA) .....................................................206°C/W
MLF-8L (θJA)......................................................63°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_DD = 3.0V, R_SW = 338KΩ, 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
I_SW = 100mA
3.8
7
Ohm
91
105
119
Enable Input Low Voltage
(turn-off)
V_DD = 1.8V to 5.5V
0.5
V
Enable Input High Voltage
(turn-on)
V_DD = 1.8V to 5.5V
VDD-
V
0.5
Shutdown current
Input supply current
R_SW Resistor = LOW; R_EL Resistor = LOW; V_DD = 5.5V
R_SW Resistor = HIGH;
R_EL Resistor = HIGH;
V_CS = 110V; V_A, V_B OPEN
0.01
0.5
µA
45
75
µA
Input current including
inductor
V_A – V_B output drive
frequency
V_IN = V_DD = 3.2V; R_SW = 338KΩ, R_EL = 1.78MΩ;
L=220µH; R_OUT =10kΩ; Lamp = 2in²
R_EL = 1.78MΩ
24
mA
158 200
242
Hz
Switching transistor
frequency
R_SW = 338KΩ
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.
November 2007
3
M9999-111507-B