Datasheet
LMZ30602
www.ti.com
SNVS997 –JULY 2013
ELECTRICAL CHARACTERISTICS
Over -40°C to 85°C free-air temperature, VIN = 3.3 V, V
OUT
= 1.8 V, I
OUT
= 2A,
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 2 A
VIN 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
= 1.5 MHz 95%
V
OUT
= 2.5V, f
SW
= 1.5 MHz 93%
V
OUT
= 1.8V, f
SW
= 1 MHz 92%
VIN = 5 V
V
OUT
= 1.5V, f
SW
= 1 MHz 91%
I
O
= 1 A
V
OUT
= 1.2V, f
SW
=750 kHz 90%
V
OUT
= 1.0V, f
SW
= 650 kHz 88%
η Efficiency
V
OUT
= 0.8V, f
SW
= 650 kHz 87%
VIN = 3.3V V
OUT
= 1.8V, f
SW
= 1 MHz 93%
I
O
= 1 A
V
OUT
= 1.5V, f
SW
= 1 MHz 92%
V
OUT
= 1.2V, f
SW
= 750 kHz 91%
V
OUT
= 1.0V, f
SW
= 650 kHz 89%
V
OUT
= 0.8V, f
SW
= 650 kHz 87%
Output voltage ripple 20 MHz bandwith 9 mV
PP
I
LIM
Overcurrent threshold 3.5 A
Recovery time 80 µs
Transient response 1.0 A/µs load step from 0.5A to 1.5A
V
OUT
45 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 107%
PWRGD Thresholds
Power
Fault 91%
Good
V
OUT
falling
Good 105%
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 175 °C
Thermal Shutdown
Thermal shutdown hysteresis 15 °C
(1) The minimum VIN depends on VOUT 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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