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LM3880 Datasheet(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM3880
Description  Power Sequencer
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3880 Datasheet(HTML) 8 Page - National Semiconductor (TI)

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DC-DC Converter
Symbol
Parameter
Conditions
Limit
Units
Min
Typ
Max
V
FB_DCDC
Feedback Voltage
Accuracy
PWM Mode (Note 11)
1.746
1.8
1.836
V
V
REF
Internal reference
voltage
0.5
V
R
DSON(P)
Pin-Pin Resistance for
PFET
V
BATT = 3.6V
I
SW = 100 mA
350
450
m
Ω
R
DSON(N)
Pin-Pin Resistance for
NFET
V
BATT = 3.6V
I
SW = 100 mA
150
250
m
Ω
I
Q_AUTO
Quiescent current for
auto mode
No load, device is not switching, FB = HIGH
28
40
µA
I
LIM
Switch peak current
limit
Open loop
1.035
1.220
1.375
A
F
OSC
Internal Oscillator
Frequency
PWM Mode
2.4
3
3.4
MHz
Global Parameters (DCDC, LILO, & LDO)
Symbol
Parameter
Conditions
Typical Limit
Units
Min
Typ
Max
I
Q_VBATT
Quiescent current into
V
BATT
Full power mode
I
OUT_DCDC = IOUT_LILO = IOUT_LDO = 0 mA, DC-DC
is not switching (FB_DCDC forced higher than
V
OUT_DCDC)
V
en = 1.1V,
100
130
µA
I
Q_GLOBAL
Shutdown current into
V
BATT
V
EN_DCDC = VEN_LILO = VEN_LDO = 0V
2.5
4
µA
Enable Pins (EN_DCDC, EN_LILO, EN_LDO)
I
EN
Enable pin input
current
All EN = 0V
.01
1
µA
V
IH
Logic high input
1.1
V
V
IL
Logic low input
0.40
V
www.national.com
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