Datasheet
Table Of Contents
- Features
- Applications
- Description
- Typical Application
- Absolute Maximum Ratings
- Pin Configuration
- Order Information
- Typical Performance Characteristics
- Pin Functions
- Simplified Block Diagram
- Decoupling Requirements
- Operation
- Applications Information
- Typical Applications
- Package Description
- Package Photo
- Related Parts
- Design Resources
LTM4620A
5
4620afb
For more information www.linear.com/LTM4620A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTM4620A is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTM4620AE is guaranteed to meet specifications from
0°C to 125°C internal temperature. Specifications over the –40°C to
125°C internal operating temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTM4620AI is guaranteed over the full –40°C to 125°C internal operating
temperature range. Note that the maximum ambient temperature
consistent with these specifications is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors.
Note 3: Tw o outputs are tested separately and the same testing condition
is applied to each output.
Note 4: The switching frequency is programmable from 400kHz to 750kHz.
Note 5: The LTM4620A is designed to operate from 400kHz to 750kHz
Note 6: These parameters are tested at wafer sort.
Note 7: See output current derating curves for different V
IN
, V
OUT
and T
A
.
Note 8: Output current limitations. For 10V ≤ V
IN
≤ 16V, the 5V output
current needs to be limited to 12A/channel, switching frequency = 750kHz.
Derating curves apply. For 7V ≤ V
IN
≤ 9V, the 5V output current needs
to be limited to 13A/channel, switching frequency = 750kHz. Derating
curves apply. All other input and output combinations are 13A/channel
with recommended switching frequency included in the efficiency graphs.
Derating curves apply.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
GBW Gain Bandwidth Product 3 MHz
V
TEMP
Diode Connected PNP I
= 100µA 0.598 V
TC Temperature Coefficient
l
2.0 mV/C
The l denotes the specifications which apply over the specified internal
operating temperature range. Specified as each individual output channel. T
A
= 25°C (Note 2), V
IN
= 12V and VRUN1, VRUN2 at 5V
unless otherwise noted. Per the typical application in Figure 26.
ELECTRICAL CHARACTERISTICS