LTC1436AIGN-PLL#TR Linear Technology, LTC1436AIGN-PLL#TR Datasheet - Page 4

• Manufacturer Part Number: LTC1436AIGN-PLL#TR
• Description: IC REG SW SYNC STEPDWN LN 24SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1436AIGN-PLL#TR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.19 ~ 9 V
• Current - Output: 50mA
• Frequency - Switching: 125kHz ~ 240kHz
• Voltage - Input: 3.5 ~ 30 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Other names: LTC1436AIGN-PLLTR

LTC1436A
LTC1436-PLL-A/LTC1437A
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
Low-Battery Comparator
V
I
V
I
V
Auxiliary Regulator/Comparator
I
I
I
V
V
V
V
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 LTC1436A/LTC1437A are tested in a feedback loop which
servos V
(V
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information
section.
Note 5: Oscillator frequency is tested by measuring the C
discharge currents and applying the formula:
4
LLBO
INLBI
AUXDR
IN AUXFB
IN AUXON
SATLBO
THLBI
HYSLBO
TH AUXON
SAT AUXDR
AUXFB
TH AUXDR
ITH
LTC1436ACGN/LTC1436ACGN-PLL/LTC1436AEGN/LTC1436AIGN/
LTC1436AIGN-PLL: T
LTC1437ACG/LTC1437AIG: T
= 1.19V).
OSENSE
J
is calculated from the ambient temperature T
D
according to the following formulas:
PARAMETER
LBO Saturation Voltage
LBO Leakage
LBI Trip Voltage
LBI Input Current
LBO Hysteresis
AUXDR Current
AUXFB Input Current
AUXON Input Current
AUXON Trip Voltage
AUXDR Saturation Voltage
AUXFB Voltage
AUXFB Divider Disconnect Voltage
to the balance point for the error amplifier
Max Current Sinking Capability
Control Current
Leakage When Off
J
= T
A
+ (P
J
= T
D
)(110 °C/W)
A
+ (P
D
)(95 °C/W)
A
CONDITIONS
I
V
High to Low Transition on LBO
V
V
V
V
V
I
V
V
V
LBO
AUXDR
LBO
LBI
EXTVCC
AUXFB
AUXON
AUXDR
AUXON
AUXON
AUXON
OSC
and power
V
V
V
A
AUXDR
AUXDR
AUXDR
= 1.19V
= 1.6mA, V
= 25°C. V
= 12V, V
charge and
= 1.6mA, V
= 1.19V, V
= 5V
= 4V, V
= 5V, 11V < V
= 5V, 3V < V
= 5V (Note 6), Ramping Negative
= 0V
The
= 4V, V
= 5V, V
= 24V, V
LBI
AUXFB
●
IN
LBI
= 1.4V
denotes the specifications which apply over the full operating
AUXFB
AUXFB
AUXON
AUXFB
= 15V, V
AUXFB
= 1.1V
AUXDR
= 1.0V
AUXDR
Note 6: The Auxiliary Regulator is tested in a feedback loop which servos
V
V
Applications Information.
Note 7: The minimum on-time test condition corresponds to an inductor
peak-to-peak ripple current ≥ 40% of I
Considerations in the Applications Information section).
Note 8: The LTC1436AE 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.
= 1.0V, V
= 1.5V, V
= 5V
= 1.0V, V
AUXFB
AUXDR
= 1.5V, V
f
< 7V (Note 5)
OSC
< 24V (Note 5)
RUN/SS
to the balance point for the error amplifier. For applications with
> 9.5V, V
(kHz) =
AUXON
AUXON
AUXON
AUXON
= 5V unless otherwise noted.
= 5V
= 5V
= 5V
(
= 0V
C
AUXFB
OSC
8.4(10
(pF) + 11
uses an internal resistive divider. See
●
●
●
●
●
8
)
)
MIN
1.16
11.5
1.14
1.0
7.5
(
10
I
CHG
1
MAX
+
I
(see Minimum On-Time
DIS
1
0.01
1.19
0.01
0.01
0.01
1.19
1.19
TYP
0.6
0.4
8.5
20
15
12
1
1
)
–1
MAX
1.22
12.5
1.24
1.4
0.8
9.5
50
1
1
5
1
1
1
14367afb
UNITS
mV
mA
µA
µA
µA
µA
µA
nA
V
V
V
V
V
V
V