MIC23603 Datasheet, PDF (3/19 Pages) Micrel Semiconductor – 4MHz PWM 6A Buck Regulator

Micrel Inc.
MIC23603
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ......................................................... 6V
Sense (V_SNS).....................................................................6V
Output Switch Voltage ..................................................6V
Enable Input Voltage (V_EN)................................ –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_EN) .................................... 0V to V_IN
Output Voltage Range (V_SNS) ........................ 0.65V to 3.6V
Junction Temperature Range (T_J)...... – 40°C ≤ T_J ≤ +125°C
Thermal Resistance
4mm x 5mm DFN-20 (θ_JA) ..............................44.1°C/W
Electrical Characteristics⁽⁴⁾
TA = 25°C; VIN = VEN = 3.6V; VOUT = 1.8V; L = 0.33µH; COUT = 47µF x 2 unless otherwise specified.
Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Condition
Min
Supply Voltage Range
2.7
Undervoltage Lockout Threshold Turn-on
2.2
Undervoltage Lockout Hysteresis
Quiescent Current
IOUT = 0mA , SNS > 1.2 × VOUT Nominal
Shutdown Current
VEN = 0V, VIN = 5.5V
Feedback Voltage
0.605
Current Limit
SNS = 0.9 × VOUTNOM
6.5
Output Voltage Line Regulation
VIN = 3.6V to 5.5V if VOUTNOM < 2.5V, ILOAD = 20mA
VIN = 4.5V to 5.5V if VOUTNOM ≥ 2.5V, ILOAD = 20mA
Output Voltage Load Regulation 20mA < ILOAD < 500mA, VIN = 3.6V if VOUTNOM < 2.5V
20mA < ILOAD < 500mA, VIN = 5.0V if VOUTNOM ≥ 2.5V
20mA < ILOAD < 1A, VIN = 3.6V if VOUTNOM < 2.5V
20mA < ILOAD < 1A, VIN = 5.0V if VOUTNOM ≥ 2.5V
PWM Switch ON-Resistance
ISW = 1000mA PMOS
ISW = –1000mA NMOS
Maximum Frequency
IOUT = 300mA
Soft Start Time
VOUT = 90%, CSS = 2.2nF
Power Good Threshold
% of VNOMINAL
85
Power Good Hysteresis
Power Good Pull Down
VSNS = 90% VNOMINAL, IPG = 1mA
Enable Threshold
Turn-On
0.4
Enable Input Current
Overtemperature Shutdown
Typ
2.5
270
24
0.01
0.62
12
0.3
0.3
0.7
0.03
0.025
4
1200
90
20
0.8
0.1
160
Overtemperature Shutdown
20
Hysteresis
Notes:
1. Exceeding the absolute maximum rating can damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Max
5.5
2.8
45
5
0.636
16
Units
V
V
mV
µA
µA
V
A
%/V
%
%
Ω
MHz
µs
95
%
%
200
mV
1.2
V
2
µA
°C
°C
November 5, 2013
3
Revision 1.1