MIC24046 Datasheet, PDF (4/27 Pages) Micrel Semiconductor – Pin-Programmable, 4.5V − 19V, 5A Step-Down Converter

Micrel, Inc.
MIC24046
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_PG to AGND ................................................... −0.3V to +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
Power-Good (PG) Pull-up Voltage (V_{PU_PG}) ........ 0V to 5.5V
Output Current ................................................................. 5A
Junction Temperature (T_J) ........................ −40°C to +125°C
Junction to Ambient Thermal Resistance
20-pin 3mm × 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
IVINQ
Input Range
Disable Current
EN/DLY = 0V
4.5
19
V
0.2
2
µA
IVINLDOQ Disable Current
IVINOp
Operating Current
IVINLDOOp 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
EN/DLY > 1.28V, OUTSNS = 1.15 × VOUT(NOM),
no switching, TA = TJ = 25°C
35
42
µA
56
0.45 0.75
mA
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
VDDA UVLO Rising
VVDDA Rising, EN/DLY > 1.28V
3.1 3.5
3.9
V
UVLO_F
VDDA UVLO Falling
VVDDA Falling, EN/DLY > 1.28V
2.87 3.2
3.45
V
UVLO_H
VDDA UVLO Hysteresis
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 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.
October 14, 2015
4
Revision 1.1