S-8340A25AFT-T2-X Datasheet, PDF (27/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_01
S-8340/8341 Series
 Characteristics
1. Examples of Major Characteristics (Typical Data)
(1) Current Consumption 1 (ISS1) vs. Supply Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz)
1000
S-8340C33A (f_OSC : 300 kHz)
600
85°C
800
25°C
600
400
Ta = −40°C
200
500
85°C
400
25°C
300
200
100
Ta = −40°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(2) Current Consumption 2 (ISS2) vs. Supply Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz)
300
S-8340C33A (f_OSC : 300 kHz)
300
250
85°C
250
200
200
25°C
85°C
150
150
100
50
25°C
Ta = −40°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V DD (V)
100
50
Ta = −40°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V DD (V)
(3) Current Consumption at Shutdown (ISSS) vs. Supply Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz) / S-8340C33A (f_OSC : 300 kHz)
1.0
0.8
85°C
0.6
Ta = −40°C ^25°C
0.4
0.2
0.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(4) Oscillation Frequency (fOSC) vs. Supply Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz)
800
S-8340C33A (f_OSC : 300 kHz)
400
85°C
700
350
85°C
600
Ta = −40°C
25°C
500
300
Ta = −40°C _25°C
250
400
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
200
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
27