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LTC3716 Datasheet(PDF) 4 Page - Linear Technology

Part No. LTC3716
Description  2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC3716 Datasheet(HTML) 4 Page - Linear Technology

 
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LTC3716
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VBIAS = 5V, VRUN/SS = 5V unless otherwise noted.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7: The minimum on-time condition corresponds to the on inductor
peak-to-peak ripple current
≥40% IMAX (see Minimum On-Time
Considerations in the Applications Information section).
Note 8: Each built-in pull-up resistor attached to the VID inputs also has a
series diode to allow input voltages higher than the VIDVCC supply without
damage or clamping (see the Applications Information section).
Note 1: Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2: The LTC3716 is guaranteed to meet performance specifications
from 0
°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
LTC3716EG: TJ = TA + (PD • 85°C/W)
Note 4: The LTC3716 is tested in a feedback loop that servos VITH to a
specified voltage and measures the resultant VEAIN.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PGOOD Output
VPGL
PGOOD Voltage Low
IPGOOD = 2mA
0.1
0.3
V
IPGOOD
PGOOD Leakage Current
VPGOOD = 5V
±1
µA
VPG
PGOOD Trip Level, Either Controller
VEAIN with Respect to Set Output Voltage
VEAIN Ramping Negative
– 8
– 10
– 12
%
VEAIN Ramping Positive
8
10
12
%
Differential Amplifier/Op Amp Gain Block
ADA
Differential Amplifier Gain
VAMPMD = 0V
0.995
1
1.005
V/V
CMRRDA
Common Mode Rejection Ratio
0V < VCM < 5V; VAMPMD = 0V
46
55
dB
RIN
Input Resistance
Measured at VOS+ Input; VAMPMD = 0V
80
k
VOS
Input Offset Voltage
Op Amp Mode; VCM = 2.5V, VAMPMD = 5V
6
mV
VDIFFOUT = 5V; IDIFFOUT = 1mA
IB
Input Bias Current
Op Amp Mode; VAMPMD = 5V
30
200
nA
AOL
Open-Loop DC Gain
Op Amp Mode; 0.7V
≤ VDIFFOUT < 10V, VAMPMD = 5V
5000
V/mV
VCM
Common Mode Input Voltage Range
Op Amp Mode; VAMPMD = 5V
0
3
V
CMRROA
Common Mode Rejection Ratio
Op Amp Mode; 0V < VCM < 3V, VAMPMD = 5V
70
90
dB
PSRROA
Power Supply Rejection Ratio
Op Amp Mode; 6V < VIN < 30V, VAMPMD = 5V
70
90
dB
ICL
Maximum Output Current
Op Amp Mode; VDIFFOUT = 0V, VAMPMD = 5V
10
35
mA
VOMAX
Maximum Output Voltage
Op Amp Mode; IDIFFOUT = 1mA, VAMPMD = 5V
10
11
V
GBW
Gain-Bandwidth Product
Op Amp Mode; IDIFFOUT = 1mA, VAMPMD = 5V
2
MHz
SR
Slew Rate
Op Amp Mode; RL = 2k, VAMPMD = 5V
5
V/
µs


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