LM3687 Datasheet, PDF (10/35 Pages) National Semiconductor (TI) – Step-Down DC-DC Converter with Integrated Low Dropout Regulator and Startup Mode

LM3687
SNVS473A – DECEMBER 2007 – REVISED JULY 2008
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Electrical Characteristics^{(1) (2)} System Parameters Supply
Symbol
Parameter
Conditions
Typical
Limit
Min
Max
Units
I_{Q_VBATT} Quiescent current into EN_LIN = low, EN_DCDC = high, I_{OUT_DCDC} =
V_BATT
I_{OUT_LIN} = 0mA, DC-DC is not switching
27
(FB_DCDC forced higher than V_{OUT_DCDC})
EN_LIN = high, EN_DCDC = low
55
60
µA
µA
EN_LIN = EN_DCDC = high
65
µA
Shutdown current into V_{EN_DCDC} = V_{EN_LIN} = 0V
V_BATT
-30°C ≤ T_J ≤ +85°C
0.1
5
µA
(1) All voltages are with respect to the potential at the SGND pin.
(2) Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the
most likely norm. Unless otherwise specified, conditions for typ. specifications are: V_BATT = 3.6V and T_A = 25°C.
10
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