MIC23450_13 Datasheet, PDF (3/22 Pages) Micrel Semiconductor – 3MHz, PWM, 2A Triple Buck Regulator with HyperLight Load® and Power Good

Micrel, Inc.
MIC23450
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (PV_IN, AV_IN) ..................................−0.3 to 6V
Sense (V_SNS1, V_SNS2, V_SNS3). .................................−0.3 to 6V
Power Good (PG1, PG2, PG3) ............................−0.3 to 6V
Output Switch Voltage (V_SW1, V_SW2, V_SW3)......... −0.3V to 6V
Enable Input Voltage (V_EN1, V_EN2, V_EN3) ............ −0.3V to V_IN
Storage Temperature Range .................... −65°C to +150°C
ESD Rating⁽³⁾................................................. ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (V_IN) ..................................... +2.7V to +5.5V
Enable Input Voltage (V_EN1, V_EN2, V_EN3) ................. 0V to V_IN
Output Voltage Range (V_SNS1, V_SNS2, V_SNS3) ... +1V to +3.3V
Junction Voltage Range (T_J) ...............−40°C ≤ T_J ≤ +125°C
Thermal Resistance
32-Pin 5mm × 5mm QFN (θ_JA).........................+30°C/W
32-Pin 5mm × 5mm QFN (θ_JC) ........................ +10°C/W
Electrical Characteristics⁽⁴⁾
TA = +25°C; VIN = VEN1, VEN2, VEN3 = 3.6V; L1 = L2 = L3 = 1µH; COUT1, COUT2, COUT3 = 4.7µF, unless otherwise specified.
Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Condition
Min. Typ. Max.
Supply Voltage Range
2.7
5.5
Undervoltage Lockout Threshold Turn-On
2.45 2.55 2.65
Undervoltage Lockout Hysteresis
75
Quiescent Current
Per Channel Shutdown Current
IOUT = 0mA, SNS > 1.2 × VOUTNOM
VEN1, VEN2, VEN3 = 0V; VIN = 5.5V
69 120
0.01
5
Output Voltage Accuracy
Feedback Voltage
(VFB1, VFB2, VFB3)
Peak Current Limit
Foldback Current Limit
VIN = 3.6V if VOUT(NOM) < 2.5V, ILOAD = 20mA
VIN = 4.5V if VOUT(NOM) ≥ 2.5V, ILOAD = 20mA
IOUT1, IOUT2, IOUT3
SNS1, SNS2, SNS3 = 0.9 × VOUTNOM
−2.5
+2.5
.604 0.62 .635
2
4.5
1.8
Output Voltage Line Regulation
(VOUT1, VOUT2, VOUT3)
VIN = 3.6V to 5.5V if VOUTNOM1, 2, 3 < 2.5V, ILOAD = 20mA
VIN = 4.5V to 5.5V if VOUTNOM1, 2, 3 ≥ 2.5V, ILOAD = 20mA
0.3
DCM: 20mA < ILOAD < 130mA, VIN = 3.6V if VOUTNOM < 2.5V
0.2
Output Voltage Load Regulation
DCM: 20mA < ILOAD < 130mA, VIN = 5.0V if VOUTNOM > 2.5V
0.4
(VOUT1, VOUT2, VOUT3)
CCM: 200mA < ILOAD < 500mA, VIN = 3.6V if VOUTNOM < 2.5V
0.6
CCM: 200mA < ILOAD < 1A, VIN = 5.0V if VOUTNOM > 2.5V
0.3
PWM Switch ON-Resistance
(RSW1, RSW2, RSW3)
ISW1, ISW2, ISW3 = +100mA (PMOS)
ISW1, ISW2, ISW3 = −100mA (NMOS)
0.2
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Units
V
V
mV
µA
µA
%
V
A
A
%/V
%
Ω
November 5, 2013
3
110513-1.1