S-1170B17UC-OTCTFG Seiko Instruments, S-1170B17UC-OTCTFG Datasheet - Page 15

• Manufacturer Part Number: S-1170B17UC-OTCTFG
• Description: IC REG LDO 800MA 1.7V SOT89-5
• Manufacturer: Seiko Instruments

Specifications of S-1170B17UC-OTCTFG

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.7V
• Voltage - Input: 2 ~ 6.5 V
• Voltage - Dropout (typical): 0.25V @ 300mA
• Number Of Regulators: 1
• Current - Output: 800mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-89-5
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 6.5 V
• Output Voltage: 1.7 V
• Output Type: Fixed
• Dropout Voltage (max): 0.3 V at 300 mA
• Output Current: 800 mA
• Line Regulation: 0.3 % / V
• Load Regulation: 100 mV
• Voltage Regulation Accuracy: 1 %
• Maximum Power Dissipation: 1 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Details

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.4.0
3. Shutdown pin (ON/OFF pin)
This pin starts and stops the regulator.
When the ON/OFF pin is set to the shutdown level, the operation of all internal circuits stops, and the built-
in P-channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially
reduce the current consumption. The VOUT pin becomes the V
resistance of several hundreds kΩ between the VOUT pin and VSS pin.
The structure of the ON/OFF pin is as shown in Figure 13. Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption
increases if a voltage of 0.3 V to V
used, connect it to the VSS pin if the logic type is “A” and to the VIN pin if it is “B”.
Logic Type
ON/OFF
_00
A
A
B
B
Figure 13
“H”: Power off
“H”: Power on
“L”: Power on
“L”: Power off
ON/OFF Pin
VSS
VIN
Internal Circuits
IN
− 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not
Operating
Operating
Stopped
Stopped
Seiko Instruments Inc.
Table 6
VOUT Pin Voltage
Set value
Set value
V
V
SS
SS
level
level
SS
level due to the internally divided
Current Consumption
I
I
I
I
SS1
SS2
SS2
SS1
S-1170 Series
15