MIC23099 Datasheet, PDF (4/26 Pages) Micrel Semiconductor – Single AA/AAA Cell Step-Up/Step-Down Regulators

Micrel, Inc.
MIC23099
Absolute Maximum Ratings⁽³⁾
Supply Voltage (V_IN) ..................................... −0.3V to +6.0V
Switch Voltage (V_SW1)................................... −0.3V to +6.0V
Switch Voltage (V_SW2)................................... −0.8V to +6.0V
Enable Voltage (V_EN) ......................................... −0.3V to V_IN
Feedback Voltage (V_FB) ............................... −0.3V to +6.0V
LED Output (V_LED) ........................................ −0.3V to +6.0V
Power Good (V_PG) ........................................ −0.3V to +6.0V
AGND to PGND1, PGND2 ........................... −0.3V to +0.3V
Ambient Storage Temperature (Ts) .......... −65°C to +150°C
ESD HBM Rating⁽⁶⁾......................................................... 2kV
ESD MM Rating............................................................200V
Operating Ratings⁽⁴⁾
Input Voltage after Start-Up (V_IN) ............. +0.875V to +1.6V
Enable Voltage (V_EN).............................................. 0V to V_IN
LED Output (V_LED) .............................................. 0V to V_OUT1
Output Voltage Range (V_OUT1) ..................... +1.8V to +3.3V
Output Voltage Range (V_OUT2) ...................... +1.0V to V_OUT1
Junction Temperature (T_J)⁽⁵⁾ ..................... –40°C to +125°C
Junction Thermal Resistance
2.5mm × 2.5mm Thin QFN-14 (θ_JA).................+70°C/W
2.5mm × 2.5mm Thin QFN-14 (θ_JC) ................+25°C/W
Electrical Characteristics⁽⁷⁾
VIN = VEN = +1.25V; VOUT1 = +1.8V; VOUT2 = 1.0V; LOUT1 = 6.8µH; LOUT2 = 4.7µH; COUT1 = 47µF; COUT2 = 10µF
TA = 25°C, unless otherwise noted. Bold values indicate –40°C ≤ TJ ≤ +125°C.
Parameter
Test Conditions
Min. Typ. Max.
Units
Input Supply (VIN)
Minimum Start Up Voltage
Quiescent Current - PFM Mode
Quiescent Current - PFM Mode
Shutdown Current
Enable Input (EN)
VIN Rising; RLOAD ≥ 500Ω, IOUT2 = 0mA
IOUT1 , IOUT2 = 0mA (Switching, Closed Loop)
Measured at VIN with LED pin open
IOUT1 , = 2mA; IOUT2 = 10mA
(Switching, Closed Loop) Measured at VIN
VEN = 0V; VIN = 1.6V
Measured at VIN
0.75 0.9
V
200 270
μA
12.6
mA
0.02
2
μA
EN Logic Level High to Start Up
EN Logic Level Low
EN Bias Current
EN Pull-Down Resistance
Solution Efficiency
VEN Rising, Regulator Enabled
VEN Falling, Regulator Shutdown
VEN = 0V (Regulator Shutdown)
IEN = 0.5µA into Pin
0.8 0.58
V
0.5
0.2
V
0.3
1
µA
3.0
4.0
5.0
MΩ
System Efficiency
VIN = 1.25V; VOUT1 = 1.8V; VOUT2 = 1.0V
POUT1 = 8mW; POUT2 = 20mW
88
%
System Efficiency
VIN = 1.25V; VOUT1 = 1.8V; VOUT2 = 1.0V
POUT1 = 80mW; POUT2 = 20mW
92
%
Notes:
3. Absolute maximum ratings indicate limits beyond which damage to the component may occur.
4. The device is not guaranteed to function outside its operating ratings.
5. The maximum allowable power dissipation is a function of the maximum junction temperature (TJ(MAX)), the junction-to-ambient thermal resistance
(θJA), and the ambient temperature (TA). The maximum allowable power dissipation will result in excessive die temperature, and the regulator will go
into thermal shutdown.
6. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
7. Specification for packaged product only.
8. Guaranteed by design.
May 27, 2014
4
Revision 1.2