LTC3609IWKG#TRPBF Linear Technology, LTC3609IWKG#TRPBF Datasheet - Page 4

• Manufacturer Part Number: LTC3609IWKG#TRPBF
• Description: IC DC/DC CONV STP-DWN 6A 52-QFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3609IWKG#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 36 V
• Current - Output: 6A
• Voltage - Input: 4 ~ 32 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 52-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -

elecTrical characTerisTics
LTC3609
junction temperature range, otherwise specifications are at T
SYMBOL
Internal V
V
∆V
V
∆V
∆V
PGOOD Output
∆V
∆V
∆V
V
Typical perForMance characTerisTics
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: T
dissipation P
Note 3: The LTC3609 is tested in a feedback loop that adjusts V
achieve a specified error amplifier output voltage (I
85°C is not tested in production. This specification is assured by design,
characterization, and correlation to testing at 125°C.
200mV/DIV

INTVCC
EXTVCC
PGL
LDO(LOADREG)
EXTVCC
EXTVCC(HYS)
FBH
FBL
FB(HYS)
5A/DIV
5A/DIV
T
thermal conductivity test board).
θ
of the package).
I
J
JC
V
LOAD
OUT
= T
= 1°C/W (θ
I
L
J
A
CC
Transient Response
LOAD STEP 0A TO 5A
V
V
FCB = 0V
FIGURE 6 CIRCUIT
is calculated from the ambient temperature T
+ (P
IN
OUT
Regulator
D
= 25V
as follows:
= 2.5V
D
• 29°C/W) (θ
JC
PARAMETER
Internal V
Internal V
EXTV
EXTV
EXTV
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
is simulated when heat sink is applied at the bottom
20µs/DIV
CC
CC
CC
Switchover Voltage
Switch Drop Voltage
Switchover Hysteresis
JA
CC
CC
is simulated per JESD51-7 high effective
Voltage
Load Regulation
3609 G01
TH
). The specification at
200mV/DIV
A
and power
5A/DIV
5A/DIV
I
V
LOAD
OUT
I
L
FB
CONDITIONS
6V < V
I
I
I
V
V
V
I
Transient Response
(Discontinuous Mode)
LOAD STEP 1A TO 6A
V
V
FCB = INTV
FIGURE 6 CIRCUIT
CC
CC
CC
PGOOD
FB
FB
FB
IN
OUT
to
= 0mA to 20mA, V
= 20mA, V
= 20mA, V
The
= 25V
Rising
Falling
Returning
= 2.5V
A
IN
= 5mA
= 25°C. V
l
< 30V, V
CC
denotes the specifications which apply over the full operating
EXTVCC
EXTVCC
Note 4: The LTC3609 is tested under pulsed load conditions such that
T
0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3609I is guaranteed over the full –40°C to 125°C operating junction
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.
20µs/DIV
EXTVCC
J
IN
≈ T
= 15V unless otherwise noted.
Rising
= 5V
EXTVCC
A
. The LTC3609E is guaranteed to meet specifications from
= 4V
= 4V
3609 G02
RUN/SS
2V/DIV
1V/DIV
5A/DIV
l
l
V
OUT
I
L
Start-Up
V
V
R
FIGURE 6 CIRCUIT
MIN
4.7
4.5
–7
IN
OUT
LOAD
7
= 12V
= 2.5V
= 0.5
–0.1
0.15
TYP
150
500
–10
4.7
10
5
1
40ms/DIV
MAX
300
–13
5.5
2.5
0.4
±2
13
UNITS
3609fb
3609 G03
mV
mV
%
%
%
%
V
V
V