参数资料
型号: SGP100SZ
厂商: Fairchild Semiconductor
文件页数: 1/5页
文件大小: 0K
描述: IC CTRLR PWM GREEN CM CV/CC 8SOP
产品变化通告: Mold Compound Change 12/Dec/2007
标准包装: 2,500
输出隔离: 隔离
频率范围: 39 ~ 45kHz
输入电压: 6.75 V ~ 30 V
输出电压: 18V
功率(瓦特): 400mW
工作温度: -40°C ~ 125°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOP
包装: 带卷 (TR)
Product Specification
Primary-side-control PWM Controller
FEATURES
Constant-voltage (CV) and constant-current (CC)
control without secondary-feedback circuitry
Green-mode function: PWM frequency linearly
decreasing
Fixed PWM frequency at 42kHz with frequency
hopping to solve EMI problems
Low start-up current: 10μA (typical)
Low operating current: 6.5mA (typical)
Peak-current-mode control in CV mode
Cycle-by-cycle current limiting
V DD over-voltage protection with latch (OVP)
V DD under-voltage lockout (UVLO)
Gate output maximum voltage clamped at 18V
SGP100
applications. The result is a low-cost, smaller and lighter
charger than a conventional design or a linear transformer.
To minimize the standby power consumption, the
proprietary green-mode function provides off-time
modulation to linearly decrease PWM frequency under
light-load conditions. This green-mode function allows
the power supply to meet power conservation
requirements. The start-up current is only 10 A, which
allows large start-up resistance for further power saving.
A charger can be implemented with few external
components and minimal cost. A typical output CV/CC
characteristic envelope is shown in Figure 1.
Vo(V)
Fixed over-temperature protection with latch
+/- 10%
APPLICATIONS
Battery chargers for cellular phones, cordless phones,
PDA, digital cameras, and power tools
Replacement for linear transformer and RCC SMPS
DESCRIPTION
This highly integrated PWM controller provides several
features to enhance the performance of low-power
flyback converters. The proprietary topology of SGP100
enables simplified circuit design for battery charger
TYPICAL APPLICATION
+/- 10%
Figure 1. Typical Output V-I Characteristic
Io(mA)
? System General Corp.
Version 1.1.2 (IAO33.0042.B1)
-1-
www.sg.com.tw ? www.fairchildsemi.com
June 14, 2011
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