Datasheet

2
LTC1928-5
T
JMAX
= 125°C, θ
JA
= 230°C/W
ORDER PART
NUMBER
V
IN
to Ground ..............................................–0.3V to 5V
V
OUT
Voltage...........................................–0.3V to 5.25V
CPO to Ground ........................................................ 10V
CN/SHDN to Ground ..................... –0.3V to (V
IN
+ 0.3V)
V
OUT
Short-Circuit Duration............................. Indefinite
I
OUT
......................................................................................... 40mA
Operating Temperature Range (Note 2) ...–40°C to 85°C
Maximum Junction Temperature ......................... 125°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
(Note 1)
Consult factory for parts specified with wider operating temperature ranges.
1
2
3
V
IN
GND
V
OUT
6
5
4
CN/SHDN
CP
CPO
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
S6 PART MARKING
LTKT
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage ● 2.7 4.4 V
I
VIN
Shutdown Current SHDN = 0V (Note 5) ● 48 µA
I
VIN
Operating Current I
OUT
= 0mA, Burst Mode
TM
Operation ● 190 330 µA
Regulated Output Voltage I
OUT
= 1mA ● 4.9 5 5.1 V
V
OUT
Temperature Coefficient ±50 ppm
Charge Pump Oscillator Frequency I
OUT
> 500µA, V
IN
= 2.7V to 4.4V ● 480 550 620 kHz
CPO Output Resistance V
IN
= 2.7V, I
OUT
= 10mA ● 17 30 Ω
V
IN
= 4.4V, I
OUT
= 10mA ● 14 24 Ω
V
OUT
Dropout Voltage (Note 3) I
OUT
= 10mA, V
OUT
= 5V ● 100 mV
V
OUT
Enable Time R
LOAD
= 2k 0.6 ms
V
OUT
Output Noise Voltage I
OUT
= 10mA, 10Hz ≤ f ≤ 100kHz 90 µV
RMS
I
OUT
= 10mA, 10Hz ≤ f ≤ 2.5MHz 800 µV
P-P
V
OUT
Line Regulation V
IN
= 2.7V to 4.4V, I
OUT
= 0 ● 420 mV
V
OUT
Load Regulation I
OUT
= 1mA to 10mA ● 210 mV
I
OUT
= 1mA to 30mA (Note 4) 4 mV
V
OUT
Shutdown Resistance CN/SHDN = 0V (Note 5)
V
IN
= 2.7V, Resistance Measured to Ground ● 160 400 Ω
V
IN
= 4.4V, Resistance Measured to Ground ● 100 300 Ω
CN/SHDN Input Threshold V
IN
= 2.7V to 4.4V (Note 5) ● 0.15 0.5 1.6 V
CN/SHDN Input Current CN/SHDN = 0V (Note 5) ● –1 –3 –6 µA
Burst Mode is a trademark of Linear Technology Corporation.
LTC1928ES6-5
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1928ES6-5 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.
Note 3: Dropout voltage is the minimum input/output voltage required to
maintain regulation at the specified output current. In dropout the output
voltage will be equal to: V
CPO
– V
DROPOUT
(see Figure 2).
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3V, C
FLY
= 0.47µF, C
OUT
, C
CPO
, C
IN
= 4.7µF unless otherwise specified.