LTM4609IV#PBF Linear Technology, LTM4609IV#PBF Datasheet - Page 4

• Manufacturer Part Number: LTM4609IV#PBF
• Description: IC BUCK/BOOST SYNC ADJ 4A 141LGA
• Manufacturer: Linear Technology
• Series: µModuler
• Type: Point of Load (POL) Non-Isolatedr

Specifications of LTM4609IV#PBF

• Design Resources: LTM4609 Spice Model
• Output: 0.8 ~ 34 V
• Number Of Outputs: 1
• Power (watts): 136W
• Mounting Type: Surface Mount
• Voltage - Input: 4.5 ~ 36 V
• Package / Case: 141-LGA
• 1st Output: 0.8 ~ 34 VDC @ 4A
• Size / Dimension: 0.59" L x 0.59" W x 0.11" H (15mm x 15mm x 2.8mm)
• Power (watts) - Rated: 136W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 98%
• Dc To Dc Converter Type: Non-Inverting/Inverting/Step Up/Step Down
• Pin Count: 141
• Input Voltage: 36V
• Output Voltage: 0.8 to 34V
• Switching Freq: 200 TO 400KHz
• Output Current: 4A
• Package Type: LGA
• Output Type: Adjustable
• Switching Regulator: Yes
• Load Regulation: -0.50%
• Line Regulation: 0.02%/V
• Mounting: Surface Mount
• Input Voltage (min): 4.5V
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Lead Free Status / Rohs Status: Compliant

ELECTRICAL CHARACTERISTICS
LTM4609
temperature range, otherwise specifi cations are at T
SYMBOL
Control Section
V
V
I
V
V
V
I
V
DF
DF
t
RFBHI
Internal V
INTV
ΔV
V
ΔV
ΔV
Current Sensing Section
V
V
I
PGOOD
ΔV
ΔV
ΔV
V
I
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 LTM4609E is guaranteed to meet specifi cations from 0°C to
85°C. Specifi cations over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical
process controls. The LTM4609I is guaranteed over the –40°C to 85°C
operating temperature range. The LTM4609MP is tested and guaranteed
over the –55°C to 125°C operating junction temperature range. High junction
4
SS
FCB
ON(MIN, BUCK)
SENSE
PGOOD
FB
RUN
STBYMD(START)
STBYMD(KA)
FCB
BURST
EXTVCC
SENSE(MAX)
SENSE(MIN, BUCK)
PGL
(BOOST, MAX)
(BUCK, MAX)
LDO
EXTVCC(HYS)
EXTVCC
FBH
FBL
FB(HYS)
CC
/V
LDO
CC
Regulator
PARAMETER
Feedback Reference Voltage
RUN Pin ON/OFF Threshold
Soft-Start Charging Current
Start-Up Threshold
Keep-Active Power On Threshold
Forced Continuous Threshold
Forced Continuous Pin Current
Burst Inhibit (Constant Frequency)
Threshold
Maximum Duty Factor
Maximum Duty Factor
Minimum On-Time for Synchronous
Switch in Buck Operation
Resistor Between V
Internal V
Internal V
EXTV
EXTV
EXTV
Maximum Current Sense Threshold
Minimum Current Sense Threshold
Sense Pins Total Source Current
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
PGOOD Leakage Current
CC
CC
CC
Switchover Voltage
Switchover Hysteresis
Switch Drop Voltage
CC
CC
Voltage
Load Regulation
OUT
and V
FB
Pins
A
CONDITIONS
V
V
V
V
V
V
Measured at FCB Pin
% Switch M4 On
% Switch M1 On
Switch M1 (Note 6)
V
I
I
I
Boost Mode
Buck Mode
Discontinuous Mode
V
V
V
V
I
V
CC
CC
CC
PGOOD
COMP
COMP
RUN
STBYMD
STBYMD
FCB
IN
SENSE
FB
FB
FB
PGOOD
= 25°C (Note 2), V
= 0mA to 20mA, V
= 20mA, V
= 20mA, V
> 7V, V
Rising
Falling
Returning
= 0.85V
= 2.2V
–
= 1.2V(–40°C to 85°C)
= 1.2V (–55°C to 125°C)
The
= 2mA
= 5V
= V
Rising
Rising, V
EXTVCC
SENSE
l
EXTVCC
EXTVCC
denotes the specifi cations which apply over the full operating
+
= 5V
RUN
= 0V
temperature degrade operating lifetimes; operating lifetime is derated for
junction temperature greater than 125°C.
Note 3: See Application Note 100.
Note 4: The LTM4609 is tested in a feedback loop that servos V
specifi ed voltage and measures the resultant V
Note 5: Turn-on and turn-off time are measured using 10% and 90%
levels. Transition delay time is measured using 50% levels.
Note 6: 100% test at wafer level only.
Note 7: Absolute Maximum Rating of –5V on SW1 and SW2 is under
transient condition only.
Rising
= 6V
EXTVCC
= 0V
IN
= 12V. Per typical application (front page) confi guration.
= 5V
l
l
l
l
l
l
0.792
0.785
0.76
–0.3
99.5
–5.5
MIN
–95
0.4
5.7
5.4
5.5
1
1
–130
–380
1.25
–0.2
–7.5
TYP
200
100
300
160
0.8
0.8
1.6
1.7
0.7
0.8
5.3
0.3
5.6
7.5
2.5
0.2
–6
FB
99
99
60
6
.
0.808
0.815
100.5
–150
MAX
0.84
–0.1
250
150
190
–10
2.2
5.5
6.3
0.3
10
2
1
COMP
UNITS
to a
4609fb
mV
mV
mV
mV
mV
kΩ
μA
μA
μA
μA
ns
%
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V