LTC1625IGN Linear Technology, LTC1625IGN Datasheet - Page 3

• Manufacturer Part Number: LTC1625IGN
• Description: IC SW REG STEP-DOWN SYNC 16-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1625IGN

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.19 ~ 36 V
• Current - Output: 50mA
• Frequency - Switching: 150kHz
• Voltage - Input: 3.7 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

ELECTRICAL CHARACTERISTICS
SYMBOL
BG t
BG t
Internal V
V
V
V
V
Oscillator
f
f
V
R
The
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T
dissipation P
OSC
H
INTVCC
LDOINT
LDOEXT
EXTVCC
SYNC
SYNC
/f
OSC
LTC1625CGN/LTC1625IGN: T
LTC1625CS/LTC1625IS: T
R
F
denotes specifications which apply over the full operating
J
CC
is calculated from the ambient temperature T
Regulator
D
according to the following formula:
PARAMETER
BG Transition Time
Internal V
INTV
EXTV
EXTV
Oscillator Freqency
Maximum Synchronized Frequency Ratio
SYNC Pin Threshold (Figure 4)
SYNC Pin Input Resistance
Rise Time
Fall Time
CC
CC
CC
Load Regulation
Voltage Drop
Switchover Voltage
CC
Voltage
J
= T
J
A
= T
+ (P
A
+ (P
D
• 110 C/W)
D
• 130 C/W)
A
and power
CONDITIONS
C
C
6V < V
I
I
I
Ramping Positive
CC
CC
CC
LOAD
LOAD
= 20mA, V
= 20mA, V
= 20mA, V
= 3300pF
= 3300pF
IN
T
< 30V, V
A
= 25 C, V
EXTVCC
EXTVCC
EXTVCC
EXTVCC
Note 3: The LTC1625 is tested in a feedback loop that adjusts V
achieve a specified error amplifier output voltage (I
Note 4: Typical in application circuit with EXTV
I
to the gate charge being delivered at the switching frequency. See
Applications Information.
Note 5: Minimum input supply voltage is 3.9V at – 40 C for industrial
grade parts.
OUT
= 4V
= 5V
Ramping Positive
IN
= 15V unless otherwise noted.
= 4V
= 0A and FCB = INTV
CC
. Dynamic supply current is higher due
MIN
135
5.0
4.5
TYP
180
150
5.2
4.7
1.5
0.9
50
50
– 1
50
CC
tied to V
TH
).
LTC1625
MAX
150
150
300
165
5.4
1.2
– 2
OUT
= 5V,
OSENSE
UNITS
3
to
kHz
mV
k
ns
ns
%
V
V
V