MIC2230_10 Datasheet, PDF (4/18 Pages) Micrel Semiconductor – Dual Synchronous 800mA/800mA Step-Down DC/DC Regulator

Micrel, Inc.
MIC2230
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .......................................................+6V
Enable 1 Voltage ………………………………………... +6V
Enable 2 Voltage ……………………………………….. +6V
Logic Input Voltage (V_EN, V_FPWM)............................ 0V to V_IN
Storage Temperature (T_S) ........................–65°C to +150°C
ESD .............................................................................. 2KV
Operating Ratings⁽²⁾
Supply Voltage (V_IN) ........................................ 2.5V to 5.5V
Junction Temperature (T_J) ........................ –40°C to +125°C
Package Thermal Resistance (θ_JA) ..........................60°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_EN1 = V_EN2 =3.6V, V_OUT1, V_OUT2, L= 2.2µH, C = 10µF, unless otherwise specified. Bold values indicate –40ºC ≤ T_J
≤ +125ºC.
Parameter
Condition
Min Typ Max Units
Supply Voltage and Current
Supply Voltage Range
2.5
5.5
V
UVLO (rising)
2.3
2.4
2.5
V
UVLO Hysteresis
100
mV
PWM Mode Supply
Current
Trickle Mode^TM Supply
Current
/FPWM = Low; V_OUT1, V_OUT2= 1.03 * V_NOM (not switching)
/FPWM = High; V_OUT1, V_OUT2= 1.03 * V_NOM (not switching)
560
950
µA
28
50
µA
Shutdown Quiescent
Current
V_EN = 0V
0.1
1
µA
Output Voltage Accuracy
Feedback voltage, V_FB Adjustable
0.780 0.8 0.820
V
Output voltage, V_OUT
Fixed Output Options
Feedback bias current
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Ripple in Trickle Mode^TM
Logic Inputs
EN Input Threshold
EN Input Current
/FPWM Input Threshold
/FPWM Input Current
2.5V ≤ V_IN ≤ 5.5V
V_IN = 5V, I_OUT = 10mA to 800mA, /FPWM = 0V
V_IN = 3V; I_OUT = 10mA to 800mA, /FPWM = 0V
V_IN=3.6V; I_OUT = 1mA; C_OUT = 10µF, L = 2.2µH.
On
Off
On
Off
-2.5
+2.5
%
10
nA
0.1
0.5
%
0.5
%
40
mV
0.8
1.2
V
0.3
0.7
V
0.01
1
µA
0.6×V_IN
V
0.3×V_IN
V
0.01
1
µA
April 2010
4
M9999-040810-C