LTC3729EG#PBF Linear Technology, LTC3729EG#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC3729EG#PBF
• Description: IC SW REG SYNC STEP-DOWN 28-SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3729EG#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5 V
• Current - Output: 5A
• Frequency - Switching: 1.1MHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Primary Input Voltage: 36V
• No. Of Outputs: 1
• Output Current: 5A
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 4V To 36V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ELECTRICAL CHARACTERISTICS
LTC3729
temperature range, otherwise specifications are at T
SYMBOL
I
R
CLKOUT
CLK
CLK
PGOOD Output
V
I
V
Differential
Amplifier
A
CMRR
R
Note 1: Absolute Maximum Ratings are those values beyond which
the life of a device may be impaired.
Note 2: T
dissipation P
Note 3: The LTC3729 is tested in a feedback loop that servos V
specified voltage and measures the resultant V
4
PLLFLTR
PGOOD
RELPHS
PGL
PG
DA
IN
HIGH
LOW
DA
LTC3729EG: T
LTC3729EUH: T
J
is calculated from the ambient temperature T
D
according to the following formulas:
PARAMETER
Phase Detector Output Current
Controller 2‑Controller 1 Phase
Phase (Relative to Controller 1)
Clock High Output Voltage
Clock Low Output Voltage
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level, Either Controller
Gain
Common Mode Rejection Ratio
Input Resistance
Sinking Capability
Sourcing Capability
J
= T
J
= T
A
A
+ (P
+ (P
D
D
• 95°C/W)
• 34°C/W)
EAIN
.
A
CONDITIONS
f
f
V
V
V
V
V
I
V
V
0V < V
Measured at V
PLLIN
PLLIN
PGOOD
PHASMD
PHASMD
PHASMD
PHASMD
PHASMD
PGOOD
EAIN
and power
V
V
EAIN
EAIN
A
with Respect to Set Output Voltage
< f
> f
= 25°C. V
CM
ITH
= 2mA
Ramping Negative
Ramping Positive
= 5V
OSC
OSC
= 0V, Open
= 5V
= 0V
= Open
= 5V
< 5V
to a
The
OS
l
+
IN
Input
denotes the specifications which apply over the full operating
= 15V, V
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5: The minimum on‑time condition corresponds to the on inductor
peak‑to‑peak ripple current ≥40% of I
Considerations in the Applications Information section).
Note 6: The LTC3729E 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.
RUN/SS
= 5V unless otherwise noted.
0.995
MIN
–6
46
MAX
4
6
(see Minimum On‑Time
–7.5
TYP
–15
180
240
120
0.1
7.5
15
60
90
55
80
1
1.005
MAX
–9.5
0.2
0.3
9.5
±1
UNITS
3729fb
Deg
Deg
Deg
Deg
Deg
V/V
kΩ
µA
µA
µA
dB
%
%
V
V
V