Datasheet
PGND/EP
Connect to AGND
5
AGND
6
AGND
3
AGND
1
VIN
2
VIN
4
EN
7
FB
SS
9
NC
10
VOUT
11
VOUT
8
V
IN
C
IN
3 x 10 PF
R
FBT
C
FF
4.7 nF (OPT)
See Table
C
SS
0.47 PF
(OPT)
R
FBB
See Table
C
OUT
2 x 330 PF
LMZ12010
VOUT
SS
FB
VIN
EN
PGND
V
OUT
5V 5.62k 1.07k 7...20V
V
OUT
R
FBT
R
FBB
V
IN
Range
3.3V 3.32k 1.07k 6...20V
2.5V 2.26k 1.07k 6...20V
1.8V 1.87k 1.50k 6...20V
1.5V 1.00k 1.13k 6...20V
1.2V 1.07k 2.05k 6...20V
0.8V 0 4.02k 6...20V
AGND
6V 15.4k 2.37k 8.5...20V
1.0V 1.62k 6.49k 6...20V
Enable
LMZ12010
www.ti.com
SNVS667G –FEBRUARY 2010–REVISED OCTOBER 2013
Simplified Application Schematic
Connection Diagram
Figure 5. Top View
11-Lead PFM
Table 1. Pin Descriptions
Pin Name Description
1, 2 VIN Input supply — Nominal operating range is 6V to 20V . A small amount of internal capacitance is contained within the
package assembly. Additional external input capacitance is required between this pin and the exposed pad (PGND).
3, 5, 6 AGND Analog Ground — Reference point for all stated voltages. Must be externally connected to PGND(EP).
4 EN Enable — Input to the precision enable comparator. Rising threshold is 1.274V typical. Once the module is enabled, a
13 uA source current is internally activated to facilitate programmable hysteresis.
7 FB Feedback — Internally connected to the regulation amplifier and over-voltage comparator. The regulation reference
point is 0.795V at this input pin. Connect the feedback resistor divider between VOUT and AGND to set the output
voltage.
8 SS Soft-Start/Track Input — To extend the 1.6 mSec internal soft-start connect an external soft start capacitor. For tracking
connect to an external resistive divider connected to a higher priority supply rail. See Design Steps for the LMZ12010
Application section.
9 NC No Connect — This pin must remain floating, do not ground.
10, 11 VOUT Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and exposed pad
(PGND).
EP PGND Exposed Pad / Power Ground — Electrical path for the power circuits within the module. PGND is not internally
connected to AGND (pin 5,6). Must be electrically connected to pins 5 and 6 external to the package. The exposed pad
is also used to dissipate heat from the package during operation. Use one hundred 12 mil thermal vias from top to
bottom copper for best thermal performance.
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