Datasheet

LM3670
www.ti.com SNVS250E –NOVEMBER 2004–REVISED FEBRUARY 2013
Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C. Limits in boldface type apply over the full operating junction temperature range
(−40°C ≤ T
J
≤ +125°C). Unless otherwise noted V
IN
= 3.6V, V
OUT
= 1.8V, I
O
= 150mA, EN = V
IN
Symbol Parameter Condition Min Typ Max Units
V
IN
Input Voltage Range
(1)
2.5 5.5 V
V
OUT
Fixed Output Voltage: 1.2V 2.5V ≤ V
IN
≤ 5.5V -2.0 +4.0 %
I
O
= 10 mA
2.5V ≤ V
IN
≤ 5.5V -4.5 +4.0
0 mA ≤ I
O
≤ 150 mA
Fixed Output Voltage: 1.5V 2.5V ≤ V
IN
≤ 5.5V -2.5 +4.0 %
I
O
= 10 mA
2.5V ≤ V
IN
≤ 5.5V -5.0 +4.0
0 mA ≤ I
O
≤ 350 mA
Fixed Output Voltage: 1.6V, 2.5V ≤ V
IN
≤ 5.5V -2.5 +4.0 %
1.875V I
O
= 10 mA
2.5V ≤ V
IN
≤ 5.5V -5.5 +4.0
0 mA ≤ I
O
≤ 350 mA
Fixed Output Voltage: 1.8V 2.5V ≤ V
IN
≤ 5.5V -1.5 +3.0 %
I
O
= 10 mA
2.5V ≤ V
IN
≤ 5.5V −4.5 +3.0
0 mA ≤ I
O
≤ 350 mA
Fixed Output Voltage: 2.5V, 3.3V 3.6V ≤ V
IN
≤ 5.5V -2.0 +4.0 %
I
O
= 10 mA
3.6V ≤ V
IN
≤ 5.5V -6.0 +4.0
0 mA ≤ I
O
≤ 350 mA
Adjustable Output Voltage 2.5V ≤ V
IN
≤ 5.5V -2.5 +4.5 %
(2)
I
O
= 10 mA
2.5V ≤ V
IN
≤ 5.5V -4.0 +4.5
0 mA ≤ I
O
≤ 150 mA
Line_reg Line Regulation 2.5V ≤ V
IN
≤ 5.5V 0.26 %/V
I
O
= 10 mA
Load_reg Load Regulation 150 mA ≤ I
O
≤ 350 mA 0.0014 %/mA
V
REF
Internal Reference Voltage 0.5 V
I
Q_SHDN
Shutdown Supply Current T
A
=85ºC 0.1 1 µA
I
Q
DC Bias Current into V
IN
No load, device is not switching 15 30 µA
(V
OUT
forced higher than
programmed output voltage)
V
UVLO
Minimum V
IN
below which V
OUT
V
2.4
will be disabled
R
DSON (P)
Pin-Pin Resistance for PFET V
IN
=V
GS
=3.6V 360 690 mΩ
R
DSON (N)
Pin-Pin Resistance for NFET V
IN
=V
GS
=3.6V 250 660 mΩ
I
LKG (P)
P Channel Leakage Current V
DS
=5.5V 0.1 1 µA
I
LKG (N)
N Channel Leakage Current V
DS
=5.5V 0.1 1.5 µA
I
LIM
Switch Peak Current Limit 400 620 750 mA
η Efficiency I
LOAD
= 1 mA 91
(V
IN
= 3.6V, V
OUT
= 1.8V)
I
LOAD
= 10 mA 94
I
LOAD
= 100 mA 94
%
I
LOAD
= 200 mA 94
I
LOAD
= 300 mA 92
I
LOAD
= 350 mA 90
V
IH
Logic High Input 1.3 V
V
IL
Logic Low Input 0.4 V
(1) The input voltage range recommended for the specified output voltages are given below: V
IN
= 2.5V to 5.5V for 0.7V ≤ V
OUT
<
1.875VV
IN
= ( V
OUT
+ V
DROP OUT
) to 5.5V for 1.875 ≤ V
OUT
≤ 3.3VWhere V
DROP OUT
= I
LOAD
* (R
DSON (P)
+ R
INDUCTOR
)
(2) Output voltage specification for the adjustable version includes tolerance of the external resistor divider.
Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LM3670