MIC33050_1205 Datasheet, PDF (3/16 Pages) Micrel Semiconductor – 4MHz Internal Inductor PWM Buck Regulator with HyperLight Load

Micrel, Inc.
MIC33050
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .........................................................6V
Output Switch Voltage (V_SW) ............................................6V
Output Switch Current (I_SW)..............................................2A
Logic Input Voltage (V_EN) .................................. –0.3V to V_IN
ESStoDraRgeatTinegm^(3p)..e..r.a..t.u..r.e...R...a..n..g..e...(.T..^s.)..............................–..6. ^{5E°SCDtoS+en1s5i0ti°vCe}
Operating Ratings⁽²⁾
Supply Voltage (V_IN)......................................... 2.7V to 5.5V
Logic Input Voltage (V_EN)…………………………-0.3V to V_IN
Junction Temperature (T_J) ..................–40°C ≤ T_J ≤ +125°C
Thermal Resistance
3mm x 3mm MLF^®-12 (_JA)................................60°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_EN = 3.6V; C_FF = 560pF; C_OUT = 4.7µF; I_OUT = 20mA unless otherwise specified.
Bold values indicate –40°C< T_J < +125°C.
Parameter
Supply Voltage Range
Undervoltage Lockout Threshold
UVLO Hysteresis
Quiescent Current, Hyper LL mode
Shutdown Current
Output Voltage Accuracy
Current Limit in PWM Mode
Output Voltage Line Regulation
Output Voltage Load Regulation
Feedback Voltage
Maximum Duty Cycle
PWM Switch ON-Resistance
Frequency
Soft-Start Time
Enable Threshold
Enable Hysteresis
Enable Input Current
Over-temperature Shutdown
Over-temperature Shutdown
Hysteresis
Condition
(turn-on)
I_OUT = 0mA ; V_SNS > 1.2*V_OUT nominal
V_IN = 5.5V; V_EN = 0V
V_IN = 3.0V; I_LOAD = 20mA
SNS = 0.9*V_NOM
V_IN = 3.0V to 5.5V; I_LOAD = 20mA
20mA < I_LOAD < 500mA,
V_IN = 3.0V; I_OUT = 20mA
SNS  V_NOM
I_SW = 100mA PMOS
I_SW = -100mA NMOS
I_LOAD = 120mA
V_OUT = 90%
(turn-on)
Min.
2.7
2.45
–2.5
0.65
390
80
0.5
Typ.
2.55
100
20
0.01
1
0.5
0.3
400
89
0.45
0.5
4
650
0.8
35
0.1
165
20
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.
Max.
5.5
2.65
32
4
+2.5
1.7
410
1.2
2
Units
V
V
mV
µA
µA
%
A
%/V
%
mV
%
Ω
MHz
µs
V
mV
µA
C
C
May 2012
3
M9999-050312-C