MIC24046-H Datasheet, PDF (4/24 Pages) Micrel Semiconductor – Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter

Micrel, Inc.
MIC24046-H
Absolute Maximum Ratings⁽¹⁾
V_VIN, V_VINLDO to AGND ................................... −0.3V to +20V
V_VDDP, V_VDDA to AGND ..................................... −0.3V to +6V
V_VINLDO to V_VDDA ............................................. −0.3V to +20V
V_VDDP to V_VDDA............................................... −0.3V to +0.3V
V_VOSETx, V_FREQ, V_ILIM, to AGND .........................−0.3V to +6V
V_BST to V_LX ....................................................... −0.3V to +6V
V_BST to AGND ................................................ −0.3V to +26V
V_EN/DLY to AGND ........................−0.3V to V_VDDA + 0.3V, +6V
V_COMP, V_OUTSNS to AGND ...........−0.3V to V_VDDA + 0.3V, +6V
AGND to PGND............................................ −0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (T_S)......................... −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽⁴⁾
HBM ......................................................................... 2kV
MM .........................................................................150V
Operating Ratings⁽²⁾
Supply Voltage (V_VIN, V_VINLDO) ........................... 4.5V to 19V
Externally Applied Analog and Drivers Supply Voltage
(V_VINLDO = V_VDDA = V_VDDP) .................................. 4.5V to 5.5V
Enable Voltage (V_EN/DLY) .................................... 0V to V_VDDA
Output Current ................................................................. 5A
Junction Temperature (T_J) ........................ −40°C to +125°C
Junction to Ambient Thermal Resistance
20-pin 3mm x 3mm QFN (θ_JA)⁽³⁾ ........................ 29°C/W
Electrical Characteristics⁽⁵⁾
VVIN = VVINLDO = 12V; CVDDA= 2.2µF, CVDDP = 2.2µF, TA = 25°C, unless otherwise noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.
Symbol
Parameter
Test Conditions
Min. Typ. Max. Units
VIN Supply
VIN
Input Range
4.5
19
V
IVINQ
Disable Current
IVINOp
Operating Current
VDDA 5V Supply
TA = TJ = 25°C
EN/DLY = 0V
−40°C ≤ TJ ≤ +125°C
EN/DLY > 1.28V, OUTSNS = 1.15 × VOUT(NOM),
no switching, TA = TJ = 25°C
35
42
µA
56
5.6
7
mA
VDDA
Operating Voltage
Dropout Operation
VDDA Undervoltage Lockout
EN/DLY > 0.58V, I(VDDA) = 0mA to 10mA
4.8 5.1
5.4
V
VINLDO = 4.5V, EN/DLY > 0.58V, I(VDDA) = 10mA
3.6 3.75
V
UVLO_R
UVLO_F
UVLO_H
VDDA UVLO Rising
VDDA UVLO Falling
VDDA UVLO Hysteresis
VVDDA Rising, EN/DLY > 1.28V
VVDDA Falling, EN/DLY > 1.28V
3.1 3.5
3.9
V
2.87 3.2
3.45
V
300
mV
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside operating range.
3. θJA is measured on the MIC24046-H evaluation board.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
July 7, 2015
4
Revision 1.1