Datasheet
LMZ30606
www.ti.com
SNVS995 –JULY 2013
ELECTRICAL CHARACTERISTICS
Over -40°C to 85°C free-air temperature, VIN = 3.3 V, V
OUT
= 1.8 V, I
OUT
= 6A,
C
IN1
= 47 µF ceramic, C
IN2
= 220 µF poly-tantalum, C
OUT1
= 47 µF ceramic, C
OUT2
= 100 µF poly-tantalum (unless otherwise
noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
OUT
Output current T
A
= 85°C, natural convection 0 6 A
V
IN
Input voltage range Over I
OUT
range 2.95
(1)
6 V
VIN = increasing 3.05 3.135
UVLO VIN Undervoltage lockout V
VIN = decreasing 2.5 2.75
V
OUT(adj)
Output voltage adjust range Over I
OUT
range 0.8 3.6 V
Set-point voltage tolerance T
A
= 25°C, I
OUT
= 0A ±1.0%
(2)
Temperature variation -40°C ≤ T
A
≤ +85°C, I
OUT
= 0A ±0.3%
V
OUT
Line regulation Over VIN range, T
A
= 25°C, I
OUT
= 0A ±0.1%
Load regulation Over I
OUT
range, T
A
= 25°C ±0.1%
Total output voltage variation Includes set-point, line, load, and temperature variation ±1.5%
(2)
V
OUT
= 3.3V, f
SW
= 1 MHz 96%
V
OUT
= 2.5V, f
SW
= 1 MHz 94%
V
OUT
= 1.8V, f
SW
= 1 MHz 92%
VIN = 5 V
V
OUT
= 1.5V, f
SW
= 1 MHz 90%
I
O
= 3 A
V
OUT
= 1.2V, f
SW
=750 kHz 89%
V
OUT
= 1.0V, f
SW
= 650 kHz 87%
η Efficiency
V
OUT
= 0.8V, f
SW
= 650 kHz 85%
VIN = 3.3V V
OUT
= 1.8V, f
SW
= 1 MHz 92%
I
O
= 3 A
V
OUT
= 1.5V, f
SW
= 1 MHz 90%
V
OUT
= 1.2V, f
SW
= 750 kHz 89%
V
OUT
= 1.0V, f
SW
= 650 kHz 87%
V
OUT
= 0.8V, f
SW
= 650 kHz 85%
Output voltage ripple 20 MHz bandwith 10 mV
PP
I
LIM
Overcurrent threshold 9 A
Recovery time 80 µs
Transient response 1.0 A/µs load step from 1.5A to 4.5A
V
OUT
120 mV
over/undershoot
V
INH-H
Inhibit High Voltage 1.25 Open
(3)
Inhibit Control V
V
INH-L
Inhibit Low Voltage –0.3 1.0
I
I(stby)
Input standby current INH pin to AGND 70 100 µA
Good 93%
V
OUT
rising
Fault 109%
PWRGD Thresholds
Power
Fault 91%
Good
V
OUT
falling
Good 107%
PWRGD Low Voltage I(PWRGD) = 0.33 mA 0.3 V
f
SW
Switching frequency Over VIN and I
OUT
ranges, RT/CLK pin OPEN 400 500 600 kHz
f
CLK
Synchronization frequency 500 2000 kHz
V
CLK-H
CLK High-Level Threshold 2.2 3.3 V
CLK Control
V
CLK-L
CLK Low-Level Threshold -0.3 0.4 V
CLK_PW CLK Pulse Width 75
(4)
ns
Thermal shutdown 170 °C
Thermal Shutdown
Thermal shutdown hysteresis 20 °C
(1) The minimum VIN depends on V
OUT
and the switching frequency. Please refer to Table 7 for operating limits.
(2) The stated limit of the set-point voltage tolerance includes the tolerance of both the internal voltage reference and the internal
adjustment resistor. The overall output voltage tolerance will be affected by the tolerance of the external R
SET
resistor.
(3) This control pin has an internal pullup. Do not place an external pull-up resistor on this pin. If this pin is left open circuit, the device
operates when input power is applied. A small low-leakage MOSFET is recommended for control. See the application section for further
guidance.
(4) The maximum synchronization clock pulse width is dependant on VIN, V
OUT
, and the synchronization frequency. See the
Synchronization (CLK) section for more information.
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